US3401054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formation of coatings on germanium bodies
Assignee: The General Electric Company PLC
•
Filing: 1965-09-03
•
Granted: 1968-09-10
•
Expires: 1985-09-03
Abstract
No abstract record available.
Inventors
- 👤 Wilkes John George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:28
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/60; H10P14/63; H10P14/6302; H10P14/6304; H10P14/6306; H10P14/6308; C; C23; C23C; C23C8/00; C23C8/06; C23C8/08; C23C8/10; C23C8/16; H10P14/68; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A METHOD OF MANUFACTURING A GERMANIUM BODY HAVING FORMED ON ITS SURFACE A COHERENT ADHERENT COATING OF GERMANIUM DIOXIDE HAVING A TETRAGONAL CRYSTALS STRUCTURE, WHICH INCLUDES THE STEPS OF EXPOSING A GERMANIUM BODY, INITIALLY FREE FROM ANY SURFACE COATING, TO AN OXIDIZING ATMOSPHERE CONTAINING WATER VAPOR, THE TOTAL PRESSURE OF SAID ATMOSPHERE BEING AT LEAST 30 KILOGRAMS PER SQUARE CENTIMETER, AND HEATING THE SAID BODY AT A TEMPERATURE ABOVE 400*C., WHILE THE BODY IS EXPOSED TO SAID ATMOSPHERE.
Claim 2
Independent Claim
78 words
A METHOD OF MANUFACTURING A GERMANIUM BODY HAVING FORMED ON ITS SURFACE A COHERENT ADHERENT COATING OF GERMANIUM DIOXIDE HAVING A TETRAGONAL CRYSTALS STRUCTURE, WHICH INCLUDES THE STEPS OF EXPOSING A GERMANIUM BODY, INITIALLY FREE FROM ANY SURFACE COATING, TO AN OXIDIZING ATMOSPHERE CONTAINING WATER VAPOR, THE TOTAL PRESSURE OF SAID ATMOSPHERE BEING AT LEAST 30 KILOGRAMS PER SQUARE CENTIMETER, AND HEATING THE SAID BODY AT A TEMPERATURE ABOVE 400*C., WHILE THE BODY IS EXPOSED TO SAID ATMOSPHERE.
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) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |