Inventor
Walter Crooks
Inventor
Los Gatos, CA, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B41Jprimary
B41JTypewriters21%
B41MPrinting, duplicating, marking, or copying processes21%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests21%
G03GElectrography14%
Y10TTechnical subjects covered by former us classification14%
G11BInformation storage based on relative movement between record carrier and transducer7%
PatentTitleYear
5,079,086'Magnetic recording media'19924,810,119'Resistive ribbon for high resolution printing'19894,456,915'Print head for high resolution electrothermal printing apparatus'19844,253,775'Apparatus for re-inking a ribbon in a thermal transfer printing system'19814,187,329'Electrophotographic developing process and compositions for use therein'19804,103,066'Polycarbonate ribbon for non-impact printing'19783,977,871'Electrophotographic developer with fibers of polytetrafluoroethylene'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1992Patents assigned to IBM (7)· patent assignee history
1976–1992Based in Los Gatos, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| IBM | 7 | 1976–1992 |
Locations
| Location | Patents | Span |
|---|---|---|
| Los Gatos, California, US | 7 | 1976–1992 |