Inventor · disambiguated record
John R. Crampton
Also filed as: CRAMPTON JOHN · CRAMPTON JOHN R
3 granted patents·1 pending application·164 citations·filing 1983–2002
77Inventor score
Top patents by PatentIndex Score
4 records- 0191US4657881AAbsorbent materialsLAPORTE INDUSTRIES LTD·Filed 1986·Granted Apr 14, 1987·71 cites·5 claims
- 0290US4591581AMethod for making absorbent materialsLAPORTE INDUSTRIES LTD·Filed 1983·Granted May 27, 1986·63 cites·13 claims
- 0374US5397475APurification of hydrogen peroxideINTEROX CHEMICALS LTD·Filed 1991·Granted Mar 14, 1995·30 cites·22 claims
- 0436US2006002762A1Method and apparatus for spreading aggregate and road building materials related to vehicle speedCRAMPTON JOHN·Filed 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →