US2883295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass composition
Assignee: Servo Corp of America
•
Filing: 1958-02-24
•
Granted: 1959-04-21
•
Expires: 1978-02-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph Jerger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:56
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/32; C03C3/321; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/904
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
33 words
AN OPTICAL, INFRARED-TRANSMITTING GLASS COMPOSITION MIXTURE OF TELURIUM, SULFUR AN DSELENIUM WITH TELLURIUM RANGING FROM ABOUT 2 TO 20%, SULFUR ABOUT 7.5 TO 40% AND THE BALANCE SUBSTANTIALLY 52.5 TO 85% OF SELENIUM.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |