US3022182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared transmitting glasses
Assignee: Individual
•
Filing: 1956-07-17
•
Granted: 1962-02-20
•
Expires: 1976-07-17
Abstract
No abstract record available.
Inventors
- 👤 Given W Cleek
- 👤 Edgar H Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:02
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/10; C03C3/00; C03C3/04; C03C3/076; C03C3/095; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A NON-CRYSTALLINE INFRARED TRANSMITTING GLASS HAVING A MELTING POINT OF LESS THAN 2750*F., AND HIGH REFRACTIVE INDEX, HIGH DEFORMATION TEMPERATURES, GOOD RESISTANCE TO
Claim 2
Dependent Claim
23 words
A NON-CRYSTALLINE INFRARED TRANSMITTING GLASS HAVING A MELTING POINT OF LESS THAN 2750*F., AND HIGH REFRACTIVE INDEX, HIGH DEFORMATION TEMPERATURES, GOOD RESISTANCE TO
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) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |