# How Marconi Patented Early Wireless Telegraphy Signals

> Guglielmo Marconi's 1897 patent for sending electrical signals through the air to enable early wireless communication.

- **Patent:** US 586193
- **Original title:** transmitting electrical signals
- **Owner:** Guglielmo Marconi
- **Granted:** 1897
- **Status:** Active
- **Times cited:** 4
- **Field:** telecommunications, mechanical

## What it does

This patent describes a system for transmitting and receiving electrical signals using a transmitter and a receiver connected to elevated conductors or antennas. It relies on the use of a spark-gap transmitter to generate electromagnetic waves and a coherer, a primitive detector, to pick up those signals at a distance. By grounding one side of the transmitter and receiver, the system significantly increased the range and reliability of wireless telegraphy compared to previous laboratory experiments.

## What it does NOT cover

- Does not cover modern digital signal processing or modulation techniques.
- Does not cover voice transmission, as this technology was limited to telegraphic pulses.
- Does not cover vacuum tube or transistor-based amplification systems.

## The clever bit

The innovation was the practical application of grounding the transmitter and receiver, which allowed the system to operate over much greater distances than the short-range laboratory setups used by predecessors like Hertz.

## Real-world examples

1. Early ship-to-shore wireless telegraphy stations
2. Transatlantic wireless communication experiments

## Why it matters

This patent is a foundational document in the history of radio. It provided the legal basis for Marconi's commercial ventures, allowing him to establish the Marconi Wireless Telegraph Company and define the early era of long-distance wireless communication.

## Frequently asked questions

### What does How Marconi Patented Early Wireless Telegraphy Signals cover?

Guglielmo Marconi's 1897 patent for sending electrical signals through the air to enable early wireless communication.

### Who owns patent US 586193?

Guglielmo Marconi owns this patent, granted in 1897.

### When does this patent expire?

This patent has expired and is now in the public domain — anyone can use the invention freely.

### What is patent US 586193 cited by?

This patent has been cited by 4 later patents that build on its ideas.

### What problem does this patent solve?

This patent is a foundational document in the history of radio. It provided the legal basis for Marconi's commercial ventures, allowing him to establish the Marconi Wireless Telegraph Company and define the early era of long-distance wireless communication.

### What does this patent NOT cover?

Does not cover modern digital signal processing or modulation techniques.

**Full plain-English explainer:** https://patentbrief.org/patent/us/586193/radio-wireless-marconi

**Original patent:** https://patents.google.com/patent/US586193

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_Source: PatentBrief — https://patentbrief.org. Patent facts are from public records; the plain-English explanation is PatentBrief's._


## Related patents

Semantically similar inventions in the PatentBrief corpus:

- [Lee De Forest's Early Radio Telegraphy System](https://patentbrief.org/patent/us/879532/de-forest-audion-vacuum-tube) — A 1908 patent by radio pioneer Lee De Forest describing methods for transmitting and receiving wireless telegraphy signals using early vacuum tube technology.
- [How Samuel Morse Patented the Electric Telegraph System](https://patentbrief.org/patent/us/1647/morse-telegraph) — Samuel Morse's 1840 patent for the electric telegraph, which enabled long-distance communication by sending electrical pulses over wires to represent letters.
- [Alexander Graham Bell's Patent for the Telephone](https://patentbrief.org/patent/us/174465/bell-telephone) — Alexander Graham Bell's 1876 patent describing the method and apparatus for transmitting vocal sounds telegraphically, effectively inventing the telephone.
- [Nikola Tesla's Remote Control System for Boats](https://patentbrief.org/patent/us/613809/tesla-remote-control-teleautomaton) — Nikola Tesla's 1898 patent for controlling a boat's movement and steering from a distance using radio waves and electrical signals.
- [How Nikola Tesla Invented the Modern AC Electric Motor](https://patentbrief.org/patent/us/382280/tesla-ac-motor) — Nikola Tesla's 1888 patent for an induction motor that uses rotating magnetic fields to convert electricity into mechanical motion without needing physical brushes.