US3063871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of semiconductor films
Assignee: Merck and Co Inc
•
Filing: 1959-10-23
•
Granted: 1962-11-13
•
Expires: 1979-10-23
Abstract
No abstract record available.
Inventors
- 👤 Henry R Barkemeyer
- 👤 William J Mcaleer
- 👤 Peter I Pollak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:26
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/14; Y; Y10; Y10S; Y10S148/00; Y10S148/052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE METHOD OF MANUFACTURING A SEMICONDUCTOR FILM OF A CONTROLLED THICKNESS GRADIENT COMPRISING PROVIDING AN EMMITTER OF SEMICONDUCTOR MATERIAL WITHIN A SUITABLE VACUUM CHAMBER, POSITIONING WITHIN SAID CHAMBER AT PASSING AN ELECTRIC CURRENT THROUGH SAID EMITTER TO HEAT SAID EMITTER TO A TEMPERATURE LESS THAN THE MELTING POINT OF SAID SEMICONDUCTOR MATERIAL, AND MAINTAINING SAID CHAMBER AT A PRESSURE LESS THAN 10-4 MM. HG DURING SAID HEATING.
Claim 2
Independent Claim
67 words
THE METHOD OF MANUFACTURING A SEMICONDUCTOR FILM OF A CONTROLLED THICKNESS GRADIENT COMPRISING PROVIDING AN EMMITTER OF SEMICONDUCTOR MATERIAL WITHIN A SUITABLE VACUUM CHAMBER, POSITIONING WITHIN SAID CHAMBER AT PASSING AN ELECTRIC CURRENT THROUGH SAID EMITTER TO HEAT SAID EMITTER TO A TEMPERATURE LESS THAN THE MELTING POINT OF SAID SEMICONDUCTOR MATERIAL, AND MAINTAINING SAID CHAMBER AT A PRESSURE LESS THAN 10-4 MM. HG DURING SAID HEATING.
References Cited (Backward Citations)
US2112124A
Cited
US2855328A
Cited
CH307775A
Cited
US2754259A
Cited
US2802759A
Cited
US2832702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |