US2955927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-diffusing glass and process for making the same
Assignee: Individual
•
Filing: 1957-07-10
•
Granted: 1960-10-11
•
Expires: 1977-07-10
Abstract
No abstract record available.
Inventors
- 👤 Ogata Hisae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:48
CPC Classifications
C; C03; C03C; C03C15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A PROCESS FOR PRODUCING LIGHT-DIFFUSING GLASS FROM TRANSPARENT GLASS, COMPRISING THE STEPS OF IMMERSING THE TRANSPARENT GLASS IN A SOLUTION OF 10 PARTS BY WEIGHT OF AMMONIUM FLUORIDE, 5 PARTS BY WEIGHT OF GLACIAL ACETIC ACID, AND 5 PARTS BY WEIGHT OF WATER, AND SUBSEQUENTLY IMMERSING THE GLASS IN A WATER SOLUTION OF HYDROFLUORIC ACID HAVING A STREAGTH BETWEEN 50% AND 60%.
Claim 2
Dependent Claim
62 words
A PROCESS FOR PRODUCING LIGHT-DIFFUSING GLASS FROM TRANSPARENT GLASS, COMPRISING THE STEPS OF IMMERSING THE TRANSPARENT GLASS IN A SOLUTION OF 10 PARTS BY WEIGHT OF AMMONIUM FLUORIDE, 5 PARTS BY WEIGHT OF GLACIAL ACETIC ACID, AND 5 PARTS BY WEIGHT OF WATER, AND SUBSEQUENTLY IMMERSING THE GLASS IN A WATER SOLUTION OF HYDROFLUORIC ACID HAVING A STREAGTH BETWEEN 50% AND 60%.
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) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |