US3088435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Masking device useful for making transistors
Assignee: Texas Instruments Inc
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Filing: 1959-10-20
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Granted: 1963-05-07
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Expires: 1979-10-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Elmer A Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:27
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/12; H05K3/1241; E; E03; E03B; E03B3/00; E03B3/06; E03B3/08; E03B3/12; H10; H10P; H10P95/00; H05K2203/00; H05K2203/01; H05K2203/0104; H05K2203/0126; Y; Y02; Y02A; Y02A20/00; Y10; Y10S; Y10S148/00; Y10S148/068; Y10S148/106; Y10S438/00; Y10S438/942; Y10S438/943; Y10S438/945; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A MASK FOR USE IN THE FABRICATION OF A SEMICONDUCTOR DEVICE COMPRISING A THIN METAL PLATE DEFINING AN OPENING AND A THIN CARBON FILM HAVING A THICKNESS MUCH LESS THAN THAT OF SAID PLATE ON AT LEAST ONE SURFACE OF SAID PLATE TO PREVENT BONDING OF SAID PLATE WHEN A BODY OF SEMICONDUCTOR MATERIAL WHEN THE TWO ARE PLCED IN INTIMATE CONTACT AND BROUGHT TO AN ELEVATED TEMPRATURE, SAID PLATE HAVING A THICKNESS WHICH IS SMALL RELATIVE TO THE THICKNESS OF THE BODY OF SEMICONDUCTOR MATERIAL.
Claim 2
Dependent Claim
86 words
A MASK FOR USE IN THE FABRICATION OF A SEMICONDUCTOR DEVICE COMPRISING A THIN METAL PLATE DEFINING AN OPENING AND A THIN CARBON FILM HAVING A THICKNESS MUCH LESS THAN THAT OF SAID PLATE ON AT LEAST ONE SURFACE OF SAID PLATE TO PREVENT BONDING OF SAID PLATE WHEN A BODY OF SEMICONDUCTOR MATERIAL WHEN THE TWO ARE PLCED IN INTIMATE CONTACT AND BROUGHT TO AN ELEVATED TEMPRATURE, SAID PLATE HAVING A THICKNESS WHICH IS SMALL RELATIVE TO THE THICKNESS OF THE BODY OF SEMICONDUCTOR MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |