Patent US4718421A successfully refreshed from Google Patents.
US3348045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ge-se-te glass and infrared detection system
Assignee: Texas Instruments Inc
•
Filing: 1965-04-22
•
Granted: 1967-10-17
•
Expires: 1985-04-22
Abstract
No abstract record available.
Inventors
- 👤 Maurice J Brau
- 👤 Rowland E Johnson
- 👤 Robert J Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:35
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/32; C03C3/321
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
44 words
AN INFRARED DETECTION SYSTEM COMPRISING A DETECTOR SENSITIVE TO INFRARED ENERGY AND A TRANSMITTING ELEMENT IN OPTICAL CONTACT WITH SAID DETECTOR, SAID TRANSMITTING ELEMENT COMPRISING A TERNARY GLASS COMPOSITION CONSISTING ESSENTIALLY OF GERMANIUM, SELENIUM AND TELLURIUM AND LYING WITHIN LINE A IN FIGURE 1.
References Cited (Backward Citations)
US3261721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |