US3214241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass containing germanium sulphide
Assignee: Pilkington Group Ltd
•
Filing: 1962-10-29
•
Granted: 1965-10-26
•
Expires: 1982-10-29
Abstract
No abstract record available.
Inventors
- 👤 Forber Albert
- 👤 Reid Alexander Mailer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:41
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/32; C03C3/321; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/904
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
27 words
GLASS CONTAINING BY WEIGHT FROM 20% TO 75% OF GERMANIUM SULPHIDE (GES) AND FROM 10% TO 80% OF SULPHUR, THE REMAINDER CONSISTING ESSENTIALLY OF A COMPATIBLE SULPHIDE.
Claim 2
Dependent Claim
27 words
GLASS CONTAINING BY WEIGHT FROM 20% TO 75% OF GERMANIUM SULPHIDE (GES) AND FROM 10% TO 80% OF SULPHUR, THE REMAINDER CONSISTING ESSENTIALLY OF A COMPATIBLE SULPHIDE.
Claim 3
Dependent Claim
7 words
GLASS CONSISTING ESSENTALLY OF GERMANIUM DISULPHIDE (GES2).
Claim 4
Dependent Claim
7 words
GLASS CONSISTING ESSENTALLY OF GERMANIUM DISULPHIDE (GES2).
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |