US3033693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared transmitting and absorbing glasses
Assignee: Eastman Kodak Co
•
Filing: 1954-12-10
•
Granted: 1962-05-08
•
Expires: 1974-12-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward Carnall
- 👤 Donald S Cary
- 👤 William F Parsons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:12
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/32; C03C3/321; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
AN OPTICAL GLASS COMPOSITION CONSISTING ESSENTIALLY OF APPROXIMATELY 47% TO 92% BY WEIGHT OF SELENIUM, THE REMAINING PERCENT BY WEIGHT OF THE COMPOSITION BEING MADE UP OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF AS, AS-TE, AS-TE-S, TE-P, AND AS2TE3-TL.
Claim 2
Dependent Claim
41 words
AN OPTICAL GLASS COMPOSITION CONSISTING ESSENTIALLY OF APPROXIMATELY 47% TO 92% BY WEIGHT OF SELENIUM, THE REMAINING PERCENT BY WEIGHT OF THE COMPOSITION BEING MADE UP OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF AS, AS-TE, AS-TE-S, TE-P, AND AS2TE3-TL.
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) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |