US3241985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent crystalline glass
Assignee: Fujifilm Holdings Corp
•
Filing: 1963-09-30
•
Granted: 1966-03-22
•
Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Kuwayama Shigeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:48
CPC Classifications
C; C03; C03C; C03C10/00; C03C10/0036; C03C10/0045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A TRANSPARENT CRYSTALLINE GLASS HAVING A LOW COEFFICIENT OF THERMAL EXPANSION AND THE FOLLOWING RANGE OF COMPOSITION BY WEIGHT:
Claim 2
Dependent Claim
19 words
A TRANSPARENT CRYSTALLINE GLASS HAVING A LOW COEFFICIENT OF THERMAL EXPANSION AND THE FOLLOWING RANGE OF COMPOSITION BY WEIGHT:
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |