Carbon Fiber Composites Patents

Carbon fiber composites patents cover PAN polyacrylonitrile precursor oxidization carbonization and surface treatment innovations; prepreg resin system toughening and out-of-autoclave cure innovations; thermoplastic CFRP thermoplastic consolidation and weld joining innovations; and recycled carbon fiber rCF reclamation and reforming innovations — with IP held by fiber manufacturers, resin suppliers, aerospace OEMs, and composite process companies: MAJOR CFRP PATENT HOLDERS: TORAY: 1,000+; specific carbon fiber innovations (specific specific T700 T800 T1000 T1100 T1200 fiber grade: specific specific PAN polyacrylonitrile precursor from specific specific wet spinning 98% AN 2% MA from specific specific oxidization stabilization 220-280°C air from specific specific pre-carbonization 500-800°C N₂ from specific specific carbonization 1,000-1,500°C N₂ from specific specific graphitization 2,500-3,000°C Ar from specific specific surface treatment electrolytic oxidation from specific specific sizing epoxy-compatible from specific specific T800S 5,880 MPa 294 GPa from specific specific T1000G 6,370 MPa 294 GPa from specific specific T1100G 7,000 MPa 324 GPa from specific specific T1200 7,200 MPa 338 GPa from specific specific filament count 1K 3K 6K 12K 24K 50K from specific specific Torayca CFA from specific specific Toray Composite Materials America TCMA Tacoma WA from specific specific Boeing 787 Dreamliner CFRP 50%); HEXCEL: 500+; specific HexPly innovations (specific specific HexPly M21: specific specific toughened epoxy prepreg from specific specific tg 185°C from specific specific 180°C cure 2h autoclave from specific specific Airbus A380 A350 primary structure from specific specific HexPly 8552: specific specific amine-cured epoxy from specific specific 177°C cure 1h from specific specific interlaminar fracture toughness Gic 350 J/m² from specific specific HexPly M77: specific specific 120°C fast cure from specific specific 5-min at 130°C OOA from specific specific RTM6 liquid resin: specific specific low-viscosity 12 mPas 80°C from specific specific 180°C cure 1.75h from specific specific Airbus A380 wing box RTM); SOLVAY/CYTEC: 500+; specific Cycom innovations (specific specific Cycom 5320-1: specific specific OOA out-of-autoclave from specific specific vacuum bag only VBO from specific specific 121°C or 177°C cure from specific specific tg 140°C 180°C from specific specific porosity <1% from specific specific PEEK/PEKK thermoplastic: specific specific APC-2 PEEK carbon fiber 0.0055″ prepreg from specific specific consolidation 370-400°C from specific specific Tg 143°C Tm 343°C from specific specific weldable induction resistance from specific specific Cytec MetaLite sandwich); SGL CARBON: 400+; TEIJIN: 500+.

Automated fiber placement AFP head design tow width course path planning compaction roller innovations; filament winding mandrel design and geodesic trajectory optimization innovations; resin transfer molding RTM vacuum-assisted VARTM and out-of-autoclave OOA preform infusion innovations; and thermoplastic composite in-situ consolidation laser resistance heating innovations represent core CFRP manufacturing patent domains: PROCESS PATENTS: BOEING; AIRBUS; TURNER; GKN; ELECTROIMPACT: specific process innovations (specific specific AFP automated fiber placement: specific specific multi-tow 8-32 tows from specific specific 6.35 mm 12.7 mm 25.4 mm tow width from specific specific Boeing 787 wing 2,000 lb/day from specific specific Electroimpact AFP head from specific specific compaction roller 50 N/mm from specific specific CNC 6-axis gantry from specific specific ±1 mm placement from specific specific defect detection vision 99% from specific specific ATL automated tape laying: specific specific wide tape 75-150 mm from specific specific Boeing 777X 3m wide tape from specific specific 50 kg/h layup rate from specific specific filament winding: specific specific Type IV vessel: specific specific 700 bar H₂ composite overwrapped from specific specific T700 fiber wet winding from specific specific helical ±54.7° geodesic from specific specific 2 vol% void from specific specific RTM resin transfer molding: specific specific low-viscosity RTM6 12 mPas from specific specific rigid closed mold from specific specific injection pressure 5 bar from specific specific fiber volume fraction Vf 60%+ from specific specific VARTM: specific specific vacuum bag one-side from specific specific 1 bar driving pressure from specific specific 10 mPas 25°C from specific specific Vf 55-60% from specific specific OOA VBO: specific specific debulk room temperature from specific specific vacuum bag cure 121°C from specific specific porosity <1% without autoclave from specific specific Cycom 5320-1 from specific specific AFP+OOA Boeing 787 fuselage barrel from specific specific thermoplastic consolidation: specific specific laser ATP from specific specific Nd:YAG 1 μm laser 600 W from specific specific PEEK strip 40 mm width from specific specific in-situ consolidation from specific specific Airbus A380 J-nose TP from specific specific Fokker thermoplastic ribs from specific specific resistance welding: specific specific PEEK CF resistance weld from specific specific 1 MPa pressure 60s from specific specific induction welding coil 4 MHz); TOOLING PATENTS: JANICKI; ESM; QUICKSTEP: specific tooling innovations (specific specific Invar 36 CTE 1.2 ppm/°C from specific specific CFRP tool CTE 0-1 ppm/°C from specific specific co-cure co-bond co-bonding from specific specific cocure adhesive film FM300 from specific specific cure monitoring dielectric sensor from specific specific CT NDT GE 50 μm resolution).

Thermoplastic CFRP resistance induction and ultrasonic welding innovations; continuous carbon fiber recycling pyrolysis and solvolysis reclamation innovations; and short-fiber injection-molded CFRP and long-fiber LFT compression molded thermoplastic composite innovations represent additional CFRP patent domains: THERMOPLASTIC CFRP PATENTS: SOLVAY; TEIJIN; TORAY: specific thermoplastic innovations (specific specific PEEK APC-2: specific specific PEEK/CF-58 vol% from specific specific Tg 143°C Tm 343°C from specific specific PEKK DuPont Kepstan: specific specific 5-60% crystallinity control from specific specific co-cure with thermoset from specific specific PPS polyphenylene sulfide: specific specific Tg 90°C Tm 280°C from specific specific Teijin Sereebo: specific specific isotropic short-fiber CFRTP from specific specific 0.1s cycle time from specific specific automotive structure from specific specific joining: specific specific resistance welding PEEK: specific specific Cu mesh 0.2 mm susceptor from specific specific 15V 2A 60s from specific specific 10 MPa lap shear from specific specific induction welding 4 MHz from specific specific ultrasonic welding 20 kHz 500W from specific specific adhesive film FM300 0.25 mm bondline ASTM D1002); RECYCLING PATENTS: ELG CF; TORAY; TEIJIN; MITSUBISHI: specific rCF innovations (specific specific pyrolysis thermal: specific specific 500°C N₂ from specific specific 20-45 min from specific specific 95% fiber tensile retention from specific specific ELG Carbon Fibre UK from specific specific Toyota Prius rCF from specific specific BMW i3 rCF floor pan from specific specific solvolysis chemical: specific specific supercritical water 250-374°C from specific specific supercritical methanol 300°C from specific specific sub-critical MEA from specific specific 99% epoxy removal from specific specific 90% fiber retention from specific specific rCF downstream: specific specific nonwoven mat carded from specific specific 50% virgin tensile retention from specific specific short-fiber injection: specific specific BASF Ultramid CF from specific specific 20-50% CF polyamide from specific specific 6061 Al substitute 50% weight reduction from specific specific long-fiber LFT: specific specific CF-PP 30% from specific specific 290°C twin-screw from specific specific 50 MPa flexural strength).

Carbon fiber composites startup IP strategy must navigate Toray PAN precursor oxidization carbonization surface treatment patents (1,000+), Hexcel HexPly M21 M77 prepreg toughened epoxy system patents (500+), Solvay/Cytec Cycom OOA thermoplastic PEEK PEKK patents (500+), Boeing automated fiber placement AFP path planning and defect detection patents (500+), Teijin Sereebo isotropic short-fiber CFRTP injection molding patents (200+), and ELG Carbon Fibre Toray pyrolysis solvolysis rCF recycling patents (200+); understand that Toray holds the most significant carbon fiber precursor and high-strength grade IP, Boeing Airbus hold the AFP ATL process and large structural manufacturing IP, and Solvay/Cytec hold the thermoplastic PEEK PEKK aerospace grade composite IP; identify whitespace in novel out-of-autoclave OOA fast-cure thermoset (<5 min cure at 150°C for automotive), novel thermoplastic CFRTP ultrasonic spot welding automation, novel bio-derived precursor carbon fiber (lignin PAN-blend T700 equivalent tensile 5,500 MPa lower cost), and novel continuous recycling solvolysis (subcritical water 250°C 90% tensile retention 60 min closed-loop): CFRP STARTUP IP STRATEGY: UNDERSTAND THE CFRP PATENT LANDSCAPE — TORAY HIGH-STRENGTH FIBER AND BOEING AFP ATL PROCESS HOLD BROAD FOUNDATIONAL IP: Toray T800-T1200 PAN precursor carbonization surface sizing patents and Boeing Airbus AFP automated fiber placement path planning defect detection patents cover the two dominant CFRP manufacture pillars — new entrants need novel precursor chemistry (bio-PAN lignin lower-cost route), novel resin chemistry (bio-derived epoxy sub-5-min cure OOA), or novel process architectures (CFRTP in-situ consolidation, microwave cure); NOVEL BIO-DERIVED PRECURSOR CARBON FIBER AND CONTINUOUS SOLVOLYSIS RECYCLING ARE HIGHEST-VALUE LEAST-CONSOLIDATED IP: After Toray T1100G 7,000 MPa standard PAN route and ELG pyrolysis rCF mat, novel lignin-PAN blend precursor carbon fiber and novel closed-loop solvolysis at 250°C <60 min with 90% fiber retention represent commercially validated patent whitespace; AUTOMOTIVE COMPOSITES GROWTH DRIVEN BY EV LIGHTWEIGHTING AND LFT/SFRTP INJECTION MOLDING CREATES NEW COMMERCIAL PATENT SPACE: EV BEV OEM lightweighting targets drive automotive CFRTP — novel automotive-grade fast-cure CFRP bonding, novel multi-material CFRTP-steel adhesive hybrid joint, and novel process monitoring (in-line ultrasonic Vf measurement QA) represent OEM-validated commercial IP; WHEN TO PATENT IN CFRP: NOVEL PROCESS WITH MEASURED MECHANICAL PROPERTIES AND CYCLE TIME: specific novel CFRP process (specific specific fiber grade + specific specific Vf % + specific specific cure time/temperature + specific specific tensile strength MPa + specific specific ILSS MPa + specific specific void % + specific specific cycle time) vs. specific Toray T800S 294 GPa 5,880 MPa Vf 60% or specific HexPly M21 180°C 2h Gic 350 J/m² autoclave or specific Cycom 5320-1 VBO 121°C porosity <1% OOA baseline — measured tensile MPa, ILSS MPa, Vf%, void%, cycle time vs. Toray/Hexcel/Solvay baseline is the critical CFRP IP metric; KEY FTO CHECKLIST: Toray T700 T800 T1000 T1100 PAN oxidization carbonization 220-280°C 1000-3000°C sizing; Hexcel M21 M77 8552 tg 185°C Gic 350 J/m²; Solvay APC-2 PEEK/CF Cycom 5320-1 OOA VBO <1% porosity; Boeing AFP 8-32 tow compaction 50N/mm defect vision; Airbus RTM6 12mPas 5bar Vf 60%; ELG pyrolysis 500°C N₂ 95% tensile rCF BMW i3; Teijin Sereebo CFRTP 0.1s cycle injection; solvolysis supercritical water 250°C 99% epoxy 90% fiber; FM300 co-cure co-bond adhesive.