Inventor
Walter L. Harmer
Inventor
Arden Hills, MN, US
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B24Dprimary
B24DTools for grinding, buffing or sharpening45%
Y10TTechnical subjects covered by former us classification19%
C09KMaterials for miscellaneous applications, not provided for elsewhere13%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form6%
C08JWorking-up6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds3%
PatentTitleYear
6,039,775'Abrasive article containing a grinding aid and method of making the same'20005,954,844'Abrasive article comprising an antiloading component'19995,914,299'Abrasive articles including a polymeric additive'19995,908,477'Abrasive articles including an antiloading composition'19995,840,090'High performance abrasive articles containing abrasive grains and nonabrasive composite grains'19985,738,695'Abrasive article containing an inorganic phosphate'19985,704,952'Abrasive article comprising an antiloading component'19985,702,811'High performance abrasive articles containing abrasive grains and nonabrasive composite grains'19975,667,542'Antiloading components for abrasive articles'19975,562,745'Abrasive articles, methods of making abrasive articles, and methods of using abrasive articles'19965,360,462'Coated abrasive article'19945,269,821'Coatable mixtures including erodable filler agglomerates, methods of preparing same, abrasive articles incorporating cured versions of same, and methods of making said articles'19935,256,170'Coated abrasive article and method of making same'19935,061,294'Abrasive article with conductive, doped, conjugated, polymer coat and method of making same'19914,273,912'Polyurethane floor varnish and floor materials coated therewith'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981–1999Patents assigned to MINNESOTA MINING & MFG (13)· patent assignee history
1981–2000Based in Arden Hills, MN, US· patent location history
1997Based in St. Paul, MN, US· patent location history
2000Patents assigned to 3M INNOVATIVE PROPERTIES CO (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MINNESOTA MINING & MFG | 13 | 1981–1999 |
| 3M INNOVATIVE PROPERTIES CO | 1 | 2000 |
Locations
| Location | Patents | Span |
|---|---|---|
| Arden Hills, Minnesota, US | 14 | 1981–2000 |
| St. Paul, Minnesota, US | 1 | 1997 |