Inventor · disambiguated record
John D. Chapman
Also filed as: CHAPMAN JOHN D
3 granted patents·34 citations·filing 1976–1992
69Inventor score
Top patents by PatentIndex Score
3 records- 0172US4166840AProcess for producing ammonium phosphate from ammonia and wet process phosphoric acidFISONS LTD·Filed 1976·Granted Sep 4, 1979·20 cites·12 claims
- 0237US5401490AMarkers of tissue hypoxiaALBERTA CANCER BOARD·Filed 1992·Granted Mar 28, 1995·11 cites·5 claims
- 0328US5208060AReduced fat pies and methods of preparing the piesBERGH FOODS CO·Filed 1992·Granted May 4, 1993·3 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →