Inventor

BIRTWISTLE DAVID HOWARD

TH5 patents

⚠️ This page may combine multiple inventors who share the name “BIRTWISTLE DAVID HOWARD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CURTIS HELENE IND INC

2 patents

US5977038ANov 2, 1999

Shampoo compositions and method

CURTIS HELENE IND INC56 citations91

US6355234B1Mar 12, 2002

Shampoo compositions and method

CURTIS HELENE IND INC36 citations88

UNILEVER HOME & PERSONAL CARE

2 patents

US6524563B1Feb 25, 2003

Hair treatment compositions

UNILEVER HOME & PERSONAL CARE26 citations90

US6696051B2Feb 24, 2004

Hair treatment compositions

UNILEVER HOME & PERSONAL CARE15 citations81

CHESEBROUGH PONDS USA

1 patent

US5776444AJul 7, 1998

Hair treatment compositions

CHESEBROUGH PONDS USA87 citations94