Inventor

MATHEWS ROGER A

US9 patents

Patents

9 patents

US4814351AMar 21, 1989

Scalp treatment

REDKEN LABORATORIES INC38 citations92

US4793992ADec 27, 1988

Hair treatment composition

REDKEN LABORATORIES INC30 citations91

US5461925AOct 31, 1995

Assessment of damage in keratin fibers

REDKEN LABORATORIES INC25 citations88

US4635654AJan 13, 1987

Method for evaluating efficacy of a hair styling product

REDKEN LABORATORIES INC9 citations73

US4963349AOct 16, 1990

Permanent wave solution

REDKEN LABORATORIES INC8 citations72

US4840791AJun 20, 1989

Hair-waving process

REDKEN LABORATORIES INC15 citations72

US4816246AMar 28, 1989

Permanent wave composition

REDKEN LABORATORIES INC9 citations72

US4972718ANov 27, 1990

Assessment of damage in keratin fibers

REDKEN LABORATORIES INC18 citations66

US5047233ASep 10, 1991

Hair-waving process

REDKEN LABORATORIES INC3 citations61