Inventor
Donald M. Lewis
Inventor
Hudson, WI, US
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer40%
B05CApparatus for applying fluent materials to surfaces, in general20%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
Y10TTechnical subjects covered by former us classification20%
PatentTitleYear
5,686,142'Process of producing magnetic recording tape having textured backcoat'19975,620,514'Differential-speed gravure coating of magnetizable layers in the manufacture of magnetic recording media'19975,589,247'Magnetic recording medium having an embossed backcoat layer'19965,447,747'Method and apparatus for smoothing gravure coatings in the manufacture of magnetic recording tape'1995Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1995–1997Patents assigned to MINNESOTA MINING & MFG (4)· patent assignee history
1995–1997Based in Hudson, WI, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MINNESOTA MINING & MFG | 4 | 1995–1997 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hudson, WI, US | 4 | 1995–1997 |