US3248238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical glass
Assignee: Schott AG
•
Filing: 1962-09-24
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Granted: 1966-04-26
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Expires: 1982-09-24
Abstract
No abstract record available.
Inventors
- 👤 Faulstich Marga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:40
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/068; C03C3/07; C03C3/072; C03C3/074; C03C3/076; C03C3/095; C03C3/102; C03C3/108; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
AN OPTICAL GLASS CHARACTERIZED BY LOW CRYSTALLIZATION TENDENCY AND LOW FLAW SUSCEPTIBILITY CONSISTING ESSENTIALLY OF THE FOLLOWING INGREDIENTS IN ABOUT THE PROPORTIONS SET FORTH:
Claim 2
Dependent Claim
24 words
AN OPTICAL GLASS CHARACTERIZED BY LOW CRYSTALLIZATION TENDENCY AND LOW FLAW SUSCEPTIBILITY CONSISTING ESSENTIALLY OF THE FOLLOWING INGREDIENTS IN ABOUT THE PROPORTIONS SET FORTH:
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |