US3401056A
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
2026-10-23 06:27
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/60; H10P14/68; H10P14/63; H10P14/6302; H10P14/6304; H10P14/6306; H10P14/6308; H10P14/6326; H10P14/6328; H10P14/6334; H10P14/66; H10P14/662; H10P14/69; H10P14/692; H10P14/6921; H10P14/69215; H10P50/00; H10P50/73; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/043; Y10S148/118; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A METHOD OF MANUFACTURING A GERMANIUM BODY HAVING FORMED ON ITS SURFACE A COHERENT ADHERENT COATING OF GERMANIUM DIOXIDE HAVING A TETRAGONAL CRYSTAL STRUCTURE, IN WHICH COATING THERE IS AT LEAST ONE APERTURE, WHICH METHOD INCLUDES THE STEPS OF: (A) MAKING PART OF THE SURFACE OF THE BODY, (I) SAID PART CORRESPONDING IN POSITION AND SHAPE TO THE POSITION AND SHAPE OF THE DESIRED APERTURE IN THE GERMANIUM DIOXIDE COATING: (II) BY FORMING ON SAID PART OF THE SURFACE A LAYER CONSISTING ESSENTIALLY OF AT LEAST ONE OF THE OXIDES OF SILICON, (B) THEN FORMING ON THE REMAINDER OF THE SURFACE A COATING OF GERMANIUM DIOXIDE HAVING A TETRAGONAL CRYSTAL STRUCTURE, AND (C) SUBSEQUENTLY REMOVING THE SILICON OXIDE LAYER FROM THE MASKED PART OF THE SURFACE BY TREATMENT WITH A REAGENT WHICH IS INERT TO THE GERMANIUM DIOXIDE COATING.
Claim 2
Independent Claim
139 words
A METHOD OF MANUFACTURING A GERMANIUM BODY HAVING FORMED ON ITS SURFACE A COHERENT ADHERENT COATING OF GERMANIUM DIOXIDE HAVING A TETRAGONAL CRYSTAL STRUCTURE, IN WHICH COATING THERE IS AT LEAST ONE APERTURE, WHICH METHOD INCLUDES THE STEPS OF: (A) MAKING PART OF THE SURFACE OF THE BODY, (I) SAID PART CORRESPONDING IN POSITION AND SHAPE TO THE POSITION AND SHAPE OF THE DESIRED APERTURE IN THE GERMANIUM DIOXIDE COATING: (II) BY FORMING ON SAID PART OF THE SURFACE A LAYER CONSISTING ESSENTIALLY OF AT LEAST ONE OF THE OXIDES OF SILICON, (B) THEN FORMING ON THE REMAINDER OF THE SURFACE A COATING OF GERMANIUM DIOXIDE HAVING A TETRAGONAL CRYSTAL STRUCTURE, AND (C) SUBSEQUENTLY REMOVING THE SILICON OXIDE LAYER FROM THE MASKED PART OF THE SURFACE BY TREATMENT WITH A REAGENT WHICH IS INERT TO THE GERMANIUM DIOXIDE COATING.
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 |