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Walter L. Harmer
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St. Paul, MN, US
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Patents Grants
last 30 patents
Information
Patent Grant
Abrasive article containing a grinding aid and method of making the...
Patent number
6,039,775
Issue date
Mar 21, 2000
3M Innovative Properties Company
Kwok-Lun Ho
B24 - GRINDING POLISHING
Information
Patent Grant
Abrasive article comprising an antiloading component
Patent number
5,954,844
Issue date
Sep 21, 1999
Minnesota Mining and Manufacturing Company
Kam W. Law
B24 - GRINDING POLISHING
Information
Patent Grant
Abrasive articles including a polymeric additive
Patent number
5,914,299
Issue date
Jun 22, 1999
Minnesota Mining and Manufacturing Company
Walter L. Harmer
B24 - GRINDING POLISHING
Information
Patent Grant
Abrasive articles including an antiloading composition
Patent number
5,908,477
Issue date
Jun 1, 1999
Minnesota Mining and Manufacturing Company
Walter L. Harmer
B24 - GRINDING POLISHING
Information
Patent Grant
High performance abrasive articles containing abrasive grains and n...
Patent number
5,840,090
Issue date
Nov 24, 1998
Minnesota Mining and Manufacturing
Kwok-Lun Ho
B24 - GRINDING POLISHING
Information
Patent Grant
Abrasive article containing an inorganic phosphate
Patent number
5,738,695
Issue date
Apr 14, 1998
Minnesota Mining and Manufacturing Company
Walter L. Harmer
B24 - GRINDING POLISHING
Information
Patent Grant
Abrasive article comprising an antiloading component
Patent number
5,704,952
Issue date
Jan 6, 1998
Minnesota Mining and Manufacturing Company
Kam W. Law
B24 - GRINDING POLISHING
Information
Patent Grant
High performance abrasive articles containing abrasive grains and n...
Patent number
5,702,811
Issue date
Dec 30, 1997
Kwok-Lun Ho
B24 - GRINDING POLISHING
Information
Patent Grant
Antiloading components for abrasive articles
Patent number
5,667,542
Issue date
Sep 16, 1997
Minnesota Mining and Manufacturing Company
Kam W. Law
B24 - GRINDING POLISHING
Information
Patent Grant
Abrasive articles, methods of making abrasive articles, and methods...
Patent number
5,562,745
Issue date
Oct 8, 1996
Minnesota Mining and Manufacturing Company
John J. Gagliardi
B24 - GRINDING POLISHING
Information
Patent Grant
Coated abrasive article
Patent number
5,360,462
Issue date
Nov 1, 1994
Minnesota Mining and Manufacturing Company
Walter L. Harmer
B24 - GRINDING POLISHING
Information
Patent Grant
Coatable mixtures including erodable filler agglomerates, methods o...
Patent number
5,269,821
Issue date
Dec 14, 1993
Minnesota Mining and Manufacturing Company
Harvey J. Helmin
B24 - GRINDING POLISHING
Information
Patent Grant
Coated abrasive article and method of making same
Patent number
5,256,170
Issue date
Oct 26, 1993
Minnesota Mining and Manufacturing Company
Walter L. Harmer
B24 - GRINDING POLISHING
Information
Patent Grant
Abrasive article with conductive, doped, conjugated, polymer coat a...
Patent number
5,061,294
Issue date
Oct 29, 1991
Minnesota Mining and Manufacturing Company
Walter L. Harmer
B24 - GRINDING POLISHING
Information
Patent Grant
Polyurethane floor varnish and floor materials coated therewith
Patent number
4,273,912
Issue date
Jun 16, 1981
Minnesota Mining and Manufacturing Company
Walter L. Harmer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...