US3226271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-conductive films and method of producing them
Assignee: DH Baldwin Co
•
Filing: 1961-07-31
•
Granted: 1965-12-28
•
Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 Frances B Hugle
- 👤 William B Hugle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:21
CPC Classifications
C; C23; C23C; C23C26/00; Y; Y10; Y10S; Y10S438/00; Y10S438/942; Y10S438/944
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A METHOD OF MAKING A COMPOSITE SEMI-CONDUCTIVE FILM ON A SUBSTRATE, WHICH COMPRISES SEQUENTIALLY EXPOSING A SURFACE OF THE SUBSTRATE TO VAPORS OF N AND P TYPE MATERIAL THROUGH THE MESHES OF A SCREEN FROM SEPARATE SOURCES OF THE N AND P TYPE MATERIAL SPACED FROM EACH OTHER IN A PLANE, SUBSTANTIALLY PARALLEL TO THE SUBSTRATE SURFACE, WHERE-
Claim 2
Independent Claim
58 words
A METHOD OF MAKING A COMPOSITE SEMI-CONDUCTIVE FILM ON A SUBSTRATE, WHICH COMPRISES SEQUENTIALLY EXPOSING A SURFACE OF THE SUBSTRATE TO VAPORS OF N AND P TYPE MATERIAL THROUGH THE MESHES OF A SCREEN FROM SEPARATE SOURCES OF THE N AND P TYPE MATERIAL SPACED FROM EACH OTHER IN A PLANE, SUBSTANTIALLY PARALLEL TO THE SUBSTRATE SURFACE, WHERE-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |