US3450581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of coating a semiconductor with a mask and diffusing an impurity therein
Assignee: Texas Instruments Inc
•
Filing: 1966-07-29
•
Granted: 1969-06-17
•
Expires: 1986-07-29
Abstract
No abstract record available.
Inventors
- 👤 Samuel R Shortes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:31
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C23C16/40; C23C16/401; C23C16/402; C30; C30B; C30B31/00; C30B31/02; C30B31/06; C30B31/16; C30B31/165; H; H10; H10P; H10P14/00; H10P14/60; H10P14/63; H10P14/6326; H10P14/6328; H10P14/6329; H10P14/69; H10P14/692; H10P14/6921; H10P14/69215; H10P14/6922; H10P32/00; H10P32/10; H10P32/14; H10P32/17; H10P32/174; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/043; Y10S148/158; Y10S148/169; Y10S65/00; Y10S65/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE878585C
Cited
US2886502A
Cited
US2802760A
Cited
US3147152A
Cited
US3235476A
Cited
US3184823A
Cited
US3055776A
Cited
US3093507A
Cited
US3200019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |