P

Inventor

MADER ROGER A

US31 patents
⚠️ This page may combine multiple inventors who share the name “MADER ROGER A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MINNESOTA MINING & MFG

21 patents
US4622395ANov 11, 1986

Phenoxazine and phenothiazine dyes and leuco forms thereof

MINNESOTA MINING & MFG45 citations92
US5314795AMay 24, 1994

Thermal-dye-bleach construction comprising a polymethine dye and a thermal carbanion-generating agent

MINNESOTA MINING & MFG34 citations91
US5663042ASep 2, 1997

Developing agents for (photo) thermographic systems

MINNESOTA MINING & MFG25 citations90
US4775754AOct 4, 1988

Preparation of leuco dyes

MINNESOTA MINING & MFG21 citations82
US4024106AMay 17, 1977

2,4-Dihydroxy-4-pentadecyl benzophenone and compositions containing the same

MINNESOTA MINING & MFG10 citations74
US5395747AMar 7, 1995

Stabilized thermal-dye-bleach constructions

MINNESOTA MINING & MFG14 citations73
US5326847AJul 5, 1994

Hindered phenolic antioxidant; antioxidant containing hydrophilic urethane polymer; dry cleaning solvent resistant, waterproof, moisture-vapor permeable material containing the polymer; and method of making the same

MINNESOTA MINING & MFG8 citations73
US5173300ADec 22, 1992

Hindered phenolic antioxidant containing hydrophilic urethane polymer; dry cleaning solvent resistant, waterproof, moisture-vapor permeable material containing the polymer; and method of making the same

MINNESOTA MINING & MFG12 citations73
US5324627AJun 28, 1994

Tetra-alkylammonium phenylsulfonylacetate thermal-dye-bleach agents

MINNESOTA MINING & MFG10 citations72
US5296381AMar 22, 1994

Sensing elements and methods for making and using same

MINNESOTA MINING & MFG13 citations71
US4782010ANov 1, 1988

Photohermographic emulsions having stable color forming developers

MINNESOTA MINING & MFG10 citations71
US5340712AAug 23, 1994

Antifoggants for photothermographic articles

MINNESOTA MINING & MFG7 citations69
US5512185AApr 30, 1996

Purification of stable organic compounds

MINNESOTA MINING & MFG2 citations63
US5443742AAug 22, 1995

Purification of stable organic compounds

MINNESOTA MINING & MFG3 citations63
US5386058AJan 31, 1995

Method of producing polymethine dyes

MINNESOTA MINING & MFG3 citations63
US5424183AJun 13, 1995

Ballasted leuco dyes and photothermographic element containing same

MINNESOTA MINING & MFG2 citations62
US4795697AJan 3, 1989

Stabilization of ketazine dyes

MINNESOTA MINING & MFG6 citations62
US5384237AJan 24, 1995

Quaternary-ammonium phenylsulfonylacetate thermal-dye-bleach agents

MINNESOTA MINING & MFG3 citations61
US5284759AFeb 8, 1994

Biological production of acetal or ketal substituted benzene compounds

MINNESOTA MINING & MFG6 citations61
US5041654AAug 20, 1991

Preparation of monosubstituted dithiooxamide compounds

MINNESOTA MINING & MFG4 citations59
US5625062AApr 29, 1997

Method of making soluble squaraine dyes

MINNESOTA MINING & MFG6 citations58

3M INNOVATIVE PROPERTIES CO

9 patents

ALBIN LOREN D

1 patent