Inventor · disambiguated record

James Heffner

Also filed as: HEFFNER JAMES · HEFFNER JAMES D

2 granted patents·44 citations·filing 1984–1999

62Inventor score

Technology areasF42D

Files withDU PONT1 HEFFNER JAMES1

Top patents by PatentIndex Score

2 records

0180USD423889SGrass plungerHEFFNER JAMES·Filed 1999·Granted May 2, 2000·38 cites·1 claims
0236US4586438ABorehole stemming with a column of liquefiable and/or vaporizable chunks of solid materialDU PONT·Filed 1984·Granted May 6, 1986·6 cites·27 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →