Portfolio comparison
PPG Industries vs US Department of Health and Human Services
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
PPG Industries
Patents indexed
1
Year range
1981
Most recent
1981
chemicalenergymanufacturingmaterialsindustrial_process
Top Patents1 enriched
US 4253922· 1981
How a Special Carbon-Fluorine Catalyst Makes Chlorine and Caustic Soda
Activity by Decade
1980s1
Company B
US Department of Health and Human Services
Patents indexed
2
Year range
1988 – 2003
Most recent
2003
pharmaceuticalbiotechmaterialschemistry
Top Patents2 enriched
US 4727064· 1988
How Special Sugars Make Medicines Dissolve Better
US 6630507· 2003
Using Cannabinoids to Protect the Brain from Oxidative Stress
Activity by Decade
1980s1
2000s1
How to use
Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.