US3054686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass composition having high chemical durability
Assignee: OI Glass Inc
•
Filing: 1960-05-18
•
Granted: 1962-09-18
•
Expires: 1980-05-18
Abstract
No abstract record available.
Inventors
- 👤 Erwin C Hagedorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:32
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/089; C03C3/091; C03C3/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A GLASS COMPOSITION SUITABLE FORMING BY DRAWING PROCESSES CONSISTING OF 67-71% SIO2, 2.5-6.0% AL2O3, 2.0-5.0% B2O3, 6.0-10.0% CAO AND MG0, 0.2.0% BAO, 10.5-14.5% NA2O, 0.1-2.0% K2O, 0-1.0% LI2O, 0-0.2% C12, AND 0.2% SO3.
Claim 2
Dependent Claim
33 words
A GLASS COMPOSITION SUITABLE FORMING BY DRAWING PROCESSES CONSISTING OF 67-71% SIO2, 2.5-6.0% AL2O3, 2.0-5.0% B2O3, 6.0-10.0% CAO AND MG0, 0.2.0% BAO, 10.5-14.5% NA2O, 0.1-2.0% K2O, 0-1.0% LI2O, 0-0.2% C12, AND 0.2% SO3.
References Cited (Backward Citations)
US2001504A
Cited
US2262951A
Cited
US2323643A
Cited
US2443142A
Cited
US2527693A
Cited
US2552495A
Cited
US2582852A
Cited
US2756158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |