US2689804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing a light diffusing film on a glass surface
Assignee: Lanteris Space LLC
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Filing: 1952-02-07
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Granted: 1954-09-21
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Expires: 1972-02-07
Abstract
No abstract record available.
Inventors
- 👤 Sadowsky Meier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:53
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C2217/00; C03C2217/20; C03C2217/28; C03C2218/00; C03C2218/10; C03C2218/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE PROCESS OF PRODUCING A LIGHT DIFFUSING FILM ON A GLASS SURFACE, COMPRISING THE STEPS OF COATING THE GLASS SURFACE WITH AN AQUEOUS SOLUTION OF A WATER SOLUBLE SILICATE SELECTED FROM THE GROUP CONSISTING OF POTASSIUM SILICATE AND SODIUM SILICATE TO FORM A FILM ON SAID GLASS SURFACE, SAID SOLUTION CONTAINING THE SILICATE IN SUCH CONCENTRATION THAT THE SOLUTION HAS A SILICATE CONTENT WITHIN A RANGE FROM APPROXIMATELY 28% DOWN TO ABOUT 10% BY WEIGHT, AND AGITATING THE SOLUTION ON THE GLASS SURFACE BY RUBBING WITH NON-ABSORPTIVE MATERIAL UNTIL THE FILM ON SAID GLASS SURFACE ASSUMES A FROST-LIKE APPEARANCE.
Claim 2
Dependent Claim
99 words
THE PROCESS OF PRODUCING A LIGHT DIFFUSING FILM ON A GLASS SURFACE, COMPRISING THE STEPS OF COATING THE GLASS SURFACE WITH AN AQUEOUS SOLUTION OF A WATER SOLUBLE SILICATE SELECTED FROM THE GROUP CONSISTING OF POTASSIUM SILICATE AND SODIUM SILICATE TO FORM A FILM ON SAID GLASS SURFACE, SAID SOLUTION CONTAINING THE SILICATE IN SUCH CONCENTRATION THAT THE SOLUTION HAS A SILICATE CONTENT WITHIN A RANGE FROM APPROXIMATELY 28% DOWN TO ABOUT 10% BY WEIGHT, AND AGITATING THE SOLUTION ON THE GLASS SURFACE BY RUBBING WITH NON-ABSORPTIVE MATERIAL UNTIL THE FILM ON SAID GLASS SURFACE ASSUMES A FROST-LIKE APPEARANCE.
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) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |