US2719098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ground glass surfaces with protective and stabilizing thermoset polysiloxane coating
Assignee: Westinghouse Electric Corp
•
Filing: 1953-05-11
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Granted: 1955-09-27
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Expires: 1973-05-11
Abstract
No abstract record available.
Inventors
- 👤 Ernest A Goldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:30
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/28; C03C17/30; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A MEMBER COMPRISING A GLASS PART, THE GLASS PART HAVING AN UNPOLISHED, GROUND SURFACE HAVING A SURFACE ROUGHNESS OF FROM ABOUT 40 TO 100 MICROINCHES R.M.S; THE GROUND SURFACE OF THE GLASS PART BEING TRANSLUCENT, AND A SMOOTH COATING OF A TRANSPARENT, THERMOSET POLYSIOXANE RESIN APPLIED TO THE GROUND SURFACE; THE APPLIED POLYSILOXANE RESIN RENDERING THE GLASS TRANSPARENT AND RESITANT TO CRAZING AND CHEMICAL ATTACK.
Claim 2
Dependent Claim
65 words
A MEMBER COMPRISING A GLASS PART, THE GLASS PART HAVING AN UNPOLISHED, GROUND SURFACE HAVING A SURFACE ROUGHNESS OF FROM ABOUT 40 TO 100 MICROINCHES R.M.S; THE GROUND SURFACE OF THE GLASS PART BEING TRANSLUCENT, AND A SMOOTH COATING OF A TRANSPARENT, THERMOSET POLYSIOXANE RESIN APPLIED TO THE GROUND SURFACE; THE APPLIED POLYSILOXANE RESIN RENDERING THE GLASS TRANSPARENT AND RESITANT TO CRAZING AND CHEMICAL ATTACK.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-26 | 1959-03-28 | 1959-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-26 | 1963-03-28 | 1963-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-26 | 1967-03-28 | 1967-09-27 | $7700.00 | Window Closed / Lapsed |