US3901718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorptive glass
Assignee: American Optical Corp
•
Filing: 1969-01-03
•
Granted: 1975-08-26
•
Expires: 1989-01-03
Abstract
Abstract Glass having an extremely high absorption coefficient for incident light in fiber optical image transfer devices and working compatibility with conventional light-conducting glasses used in the manufacture of such devices.
Inventors
- 👤 Jimmy C C Wu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:50
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/16; C03C3/21; C03C4/00; C03C4/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
13 words
AN ABSORPTIVE GLASS MATERIAL OF A COMPOSITION CONSISTING ESSENTIALLY OF THE FOLLOWING INGREDIENTS:
Claim 2
Dependent Claim
13 words
AN ABSORPTIVE GLASS MATERIAL OF A COMPOSITION CONSISTING ESSENTIALLY OF THE FOLLOWING INGREDIENTS:
Claim 3
Dependent Claim
13 words
An absorptive glass material according to claim 1 and having the following ingredients:
Claim 4
Dependent Claim
13 words
An absorptive glass material according to claim 1 and having the following ingredients:
Claim 5
Dependent Claim
13 words
An absorptive glass material according to claim 1 and having the following ingredients:
Claim 6
Dependent Claim
13 words
An absorptive glass material according to claim 1 and having the following ingredients:
Claim 7
Dependent Claim
13 words
An absorptive glass material according to claim 1 and having the following ingredients:
Claim 8
Dependent Claim
13 words
An absorptive glass material according to claim 1 and having the following ingredients:
Claim 9
Dependent Claim
13 words
An absorptive glass material according to claim 1 and having the following ingredients:
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |