Inventor · disambiguated record
David H. Birtwistle
Also filed as: BIRTWISTLE DAVID H · BIRTWISTLE DAVID HOWARD
12 granted patents·590 citations·filing 1989–2002
94Inventor score
Top patents by PatentIndex Score
12 records- 0193US5015471ATopical compositionCHESEBROUGH PONDS USA·Filed 1989·Granted May 14, 1991·122 cites·21 claims
- 0291US5776444AHair treatment compositionsCHESEBROUGH PONDS USA·Filed 1996·Granted Jul 7, 1998·87 cites·10 claims
- 0387US6524563B1Hair treatment compositionsUNILEVER HOME & PERSONAL CARE·Filed 2000·Granted Feb 25, 2003·26 cites·23 claims
- 0483US6696051B2Hair treatment compositionsUNILEVER HOME & PERSONAL CARE·Filed 2002·Granted Feb 24, 2004·15 cites·7 claims
- 0581US5186928AShampoo compositionCHESEBROUGH PONDS USA·Filed 1992·Granted Feb 16, 1993·55 cites·11 claims
- 0680US5977038AShampoo compositions and methodCURTIS HELENE IND INC·Filed 1997·Granted Nov 2, 1999·56 cites·8 claims
- 0777US5093112ATopical compositionCHESEBROUGH PONDS USA·Filed 1989·Granted Mar 3, 1992·56 cites·21 claims
- 0875US5302322AHair care compositionCHESEBROUGH PONDS USA·Filed 1992·Granted Apr 12, 1994·52 cites·10 claims
- 0975US5139781ATopical composition comprising mono- and di-alkyl or alkenyl phosphates and alkylamidopropyl betaines of alkylamphoglycinatesCHESEBROUGH PONDS USA·Filed 1991·Granted Aug 18, 1992·43 cites·19 claims
- 1071US6355234B1Shampoo compositions and methodCURTIS HELENE IND INC·Filed 1999·Granted Mar 12, 2002·36 cites·12 claims
- 1161US5078991ATopical compositionCHESEBROUGH PONDS USA·Filed 1989·Granted Jan 7, 1992·26 cites·16 claims
- 1247US5180579ATopical composition comprising a mixture of particular di-alkyl or alkenyl phosphate esters and mono-alkyl or alkenyl phosphate estersCHESEBROUGH PONDS USA·Filed 1991·Granted Jan 19, 1993·16 cites·21 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →