Inventor
William D. Westwood
Inventor
Nepean, CA
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B41Jprimary
B41JTypewriters14%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%
G01DMeasuring not specially adapted for a specific variable11%
H04NPictorial communication, e.g. television11%
G02BOptical elements, systems or apparatus7%
G09GArrangements or circuits for control of indicating devices using static means to present variable information7%
H01JElectric discharge tubes or discharge lamps7%
H10DInorganic electric semiconductor devices7%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h107%
C23CCoating metallic material4%
PatentTitleYear
4,969,712'Optoelectronic apparatus and method for its fabrication'19904,528,438'End point control in plasma etching'19854,459,739'Thin film transistors'19844,422,090'Thin film transistors'19834,413,883'Displays controlled by MIM switches of small capacitance'19834,392,931'Reactive deposition method and apparatus'19834,366,488'Read/write arrangement for a magnetic terminal'19824,275,290'Thermally activated liquid ink printing'19814,166,277'Electrostatic ink ejection printing head'19794,164,745'Printing by modulation of ink viscosity'19794,162,502'Printer with electrostatic ink control'19794,114,037'Multiple lens system for an optical imaging device'19784,050,780'Optical system for a scanning apparatus with reflector pairs at each end'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1990Patents assigned to NORTHERN TELECOM LTD (13)· patent assignee history
1977–1985Based in Ottawa, CA· patent location history
1981–1990Based in Nepean, CA· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NORTHERN TELECOM LTD | 13 | 1977–1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| Nepean, CA | 7 | 1981–1990 |
| Ottawa, CA | 6 | 1977–1985 |