Inventor · disambiguated record
Harlan B. Johnson
Also filed as: JOHNSON HARLAN B
24 granted patents·753 citations·filing 1974–1992
97Inventor score
Files withPPG INDUSTRIES INC24
Top patents by PatentIndex Score
24 records- 0195US4681750APreparation of amorphous, precipitated silica and siliceous filler-reinforced microporous polymeric separatorPPG INDUSTRIES INC·Filed 1986·Granted Jul 21, 1987·133 cites·64 claims
- 0294US5326391AMicroporous material exhibiting increased whiteness retentionPPG INDUSTRIES INC·Filed 1992·Granted Jul 5, 1994·116 cites·22 claims
- 0389US4105516AMethod of electrolysisPPG INDUSTRIES INC·Filed 1977·Granted Aug 8, 1978·35 cites·24 claims
- 0487US3990957AMethod of electrolysisPPG INDUSTRIES INC·Filed 1975·Granted Nov 9, 1976·30 cites·14 claims
- 0584US4959208AActive agent delivery devicePPG INDUSTRIES INC·Filed 1988·Granted Sep 25, 1990·47 cites·14 claims
- 0684US4101394AElectrolytic methodPPG INDUSTRIES INC·Filed 1977·Granted Jul 18, 1978·25 cites·18 claims
- 0784US4007107AElectrolytic anodePPG INDUSTRIES INC·Filed 1974·Granted Feb 8, 1977·22 cites·2 claims
- 0881US4865760ACalcium hypochlorite compositionPPG INDUSTRIES INC·Filed 1988·Granted Sep 12, 1989·33 cites·10 claims
- 0981US4837253ACorrosion inhibiting pigmentPPG INDUSTRIES INC·Filed 1987·Granted Jun 6, 1989·33 cites·24 claims
- 1079US5071645AProcess of producing an active agent delivery devicePPG INDUSTRIES INC·Filed 1991·Granted Dec 10, 1991·38 cites·11 claims
- 1177US5009971AGas recombinant separatorPPG INDUSTRIES INC·Filed 1989·Granted Apr 23, 1991·55 cites·50 claims
- 1277US4849297AArticle having a corrosion inhibiting coatingPPG INDUSTRIES INC·Filed 1989·Granted Jul 18, 1989·27 cites·9 claims
- 1374US5035886AActive agent delivery devicePPG INDUSTRIES INC·Filed 1990·Granted Jul 30, 1991·41 cites·5 claims
- 1473US5009806ACalcium hypochlorite articlePPG INDUSTRIES INC·Filed 1990·Granted Apr 23, 1991·27 cites·12 claims
- 1573US4101624AMethod of casting siliconPPG INDUSTRIES INC·Filed 1974·Granted Jul 18, 1978·16 cites·4 claims
- 1672US4970020ACalcium hypochlorite compositionPPG INDUSTRIES INC·Filed 1989·Granted Nov 13, 1990·20 cites·10 claims
- 1765US4040918AMethod of activating an anodePPG INDUSTRIES INC·Filed 1976·Granted Aug 9, 1977·13 cites·6 claims
- 1864US4244793ABrine electrolysis using fixed bed oxygen depolarized cathode chlor-alkali cellPPG INDUSTRIES INC·Filed 1979·Granted Jan 13, 1981·12 cites·20 claims
- 1964US4055477AElectrolyzing brine using an anode coated with an intermetallic compoundPPG INDUSTRIES INC·Filed 1976·Granted Oct 25, 1977·12 cites·15 claims
- 2050US4329209AProcess using an oxidant depolarized solid polymer electrolyte chlor-alkali cellPPG INDUSTRIES INC·Filed 1981·Granted May 11, 1982·7 cites·10 claims
- 2149US4313813AFixed bed oxygen depolarized cathode chlor-alkali cellPPG INDUSTRIES INC·Filed 1980·Granted Feb 2, 1982·7 cites·5 claims
- 2244US3963593AElectrodes having silicide surfacePPG INDUSTRIES INC·Filed 1974·Granted Jun 15, 1976·3 cites·10 claims
- 2334US3958741AMethod of mounting silicon anodes in a chlor-alkali cellPPG INDUSTRIES INC·Filed 1974·Granted May 25, 1976·1 cites·9 claims
- 2430US4253924ASolid polymer electrolyte chlor-alkali processPPG INDUSTRIES INC·Filed 1979·Granted Mar 3, 1981·0 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →