Inventor
PIERCE JOHN R
US18 patents
⚠️ This page may combine multiple inventors who share the name “PIERCE JOHN R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HENKEL CORP
16 patentsUS5298289AMar 29, 1994
Polyphenol compounds and treatment and after-treatment of metal, plastic and painted surfaces therewith
HENKEL CORP59 citations95
US5891952AApr 6, 1999
Aqueous compositions containing polyphenol copolymers and processes for their preparation
HENKEL CORP27 citations92
US5401337AMar 28, 1995
Secondary protective treatments for metal surfaces
HENKEL CORP24 citations92
US5266410ANov 30, 1993
Treatment and after-treatment of metal with polyphenol compounds
HENKEL CORP32 citations92
US5226976AJul 13, 1993
Metal treatment
HENKEL CORP37 citations92
US5068299ANov 26, 1991
Carbodohydrate-modifed polyphenol compounds and compositions containing them
HENKEL CORP26 citations92
US5039770AAug 13, 1991
Treatment and after-treatment of metal with polyphenol compounds
HENKEL CORP28 citations92
US4970264ANov 13, 1990
Treatment and after-treatment of metal with amine oxide-containing polyphenol compounds
HENKEL CORP26 citations92
US4963596AOct 16, 1990
Treatment and after-treatment of metal with carbohydrate-modified polyphenol compounds
HENKEL CORP50 citations92
US5116912AMay 26, 1992
Polyphenolic compounds and uses thereof
HENKEL CORP36 citations89
US6328816B1Dec 11, 2001
Composition and method for degreasing metal surfaces
HENKEL CORP17 citations84
US5063089ANov 5, 1991
Hydroxylamine or amine oxide containing polyphenolic compounds and uses thereof
HENKEL CORP20 citations82
US6211132B1Apr 3, 2001
Composition and method for deburring/degreasing/cleaning metal surfaces
HENKEL CORP17 citations79
US6251847B1Jun 26, 2001
Composition and method for cleaning/degreasing metal surfaces, especially composites of copper and aluminum
HENKEL CORP8 citations73
US6899770B1May 31, 2005
Composition and process for treating metal surfaces
HENKEL CORP7 citations70
US5948178ASep 7, 1999
Composition and process for forming a solid adherent protective coating on metal surfaces
HENKEL CORP1 citations52