Inventor · disambiguated record
John K. Howell, Jr.
Also filed as: HOWELL JOHN · HOWELL JOHN K · HOWELL JOHN K JR · HOWELL JOHN KELLER
12 granted patents·254 citations·filing 1975–1998
92Inventor score
Files withOXY METAL INDUSTRIES CORP6PRAXAIR TECHNOLOGY INC2HOOKER CHEMICALS PLASTICS CORP1SEPRAGEN1SEPRAGEN CORP1
Top patents by PatentIndex Score
12 records- 0189US4289826AWater-borne coating for metal surfacesHOOKER CHEMICALS PLASTICS CORP·Filed 1978·Granted Sep 15, 1981·44 cites·8 claims
- 0288US4180603ACoating bath composition and methodOXY METAL INDUSTRIES CORP·Filed 1977·Granted Dec 25, 1979·44 cites·9 claims
- 0378US4039353APost-treatment of conversion-coated metal surfacesOXY METAL INDUSTRIES CORP·Filed 1975·Granted Aug 2, 1977·26 cites·18 claims
- 0476US5492723AAdsorbent mediumSEPRAGEN CORP·Filed 1991·Granted Feb 20, 1996·44 cites·10 claims
- 0573US4063969ATreating aluminum with tannin and lithiumOXY METAL INDUSTRIES CORP·Filed 1976·Granted Dec 20, 1977·20 cites·14 claims
- 0669US4233197AWater-borne coating for metal surfacesOXY METAL INDUSTRIES CORP·Filed 1978·Granted Nov 11, 1980·20 cites·7 claims
- 0762US4174980AMelamine-formaldehyde and tannin treatment of metal surfacesOXY METAL INDUSTRIES CORP·Filed 1978·Granted Nov 20, 1979·16 cites·6 claims
- 0850US5901578ACryogenic rectification system with integral product boilerPRAXAIR TECHNOLOGY INC·Filed 1998·Granted May 11, 1999·12 cites·10 claims
- 0942US4255305ACoating bath composition and methodOXY METAL INDUSTRIES CORP·Filed 1979·Granted Mar 10, 1981·6 cites·15 claims
- 1038US5690996ACross-linked cellulose spongeSEPRAGEN·Filed 1995·Granted Nov 25, 1997·11 cites·13 claims
- 1136US4957524AAir separation process with improved reboiler liquid cleaning circuitUNION CARBIDE CORP·Filed 1989·Granted Sep 18, 1990·5 cites·13 claims
- 1231US5983667ACryogenic system for producing ultra-high purity nitrogenPRAXAIR TECHNOLOGY INC·Filed 1997·Granted Nov 16, 1999·6 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →