US3145114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for increasing the index of refraction of glass and an article made thereby
Assignee: Prismo Safety Corp
•
Filing: 1960-10-24
•
Granted: 1964-08-18
•
Expires: 1980-10-24
Abstract
No abstract record available.
Inventors
- 👤 Guy E Rindone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:22
CPC Classifications
C; C03; C03C; C03C12/00; C03C12/02; C03C3/00; C03C3/12; C03C3/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
25 words
A PROCESS FOR INCREASING THE INDEX OF REFRACTION OF TRANSPARENT GLASSES HAVING A COMPOSITION CONSISTING ESSENTIALLY OF THE FOLLOWING INGREDIENTS IN THE MOL PERCENTS INDICATED:
Claim 2
Dependent Claim
25 words
A PROCESS FOR INCREASING THE INDEX OF REFRACTION OF TRANSPARENT GLASSES HAVING A COMPOSITION CONSISTING ESSENTIALLY OF THE FOLLOWING INGREDIENTS IN THE MOL PERCENTS INDICATED:
Claim 3
Dependent Claim
12 words
TRANSPARENT GLASS ARTICLES MADE IN ACCORDANCE WITH THE PROCESS OF CLAIM 1.
References Cited (Backward Citations)
US1814012A
Cited
US2113818A
Cited
US2369189A
Cited
US2418489A
Cited
US2713286A
Cited
US2628156A
Cited
US2777255A
Cited
US2790723A
Cited
US2870030A
Cited
US2859560A
Cited
US2980547A
Cited
US2939797A
Cited
US3041191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |