US3925089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a mixture for tv glasses
Assignee: US Philips Corp
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Filing: 1973-09-24
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Granted: 1975-12-09
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Expires: 1993-09-24
Abstract
Abstract The manufacture of a mixture for TV-glass whose composition lies within the following limits in % by weight: with felspar having a specific surface > 1 sq. m/g and quartz sand having a specific surface < 0.1 sq. m/g.
Inventors
- 👤 Mathijs Maria Hendrikus Houben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:01
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/102; C03C3/105; C03C1/00; C03C3/083; C03C3/085; C03C3/087; C03C3/089; C03C3/091
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A METHOD OF MANUFACTURING A GLASS MIXTURE INTENDED FOR THE MANUFACTURE OF GLASSES FOR THE SCREEN OF THE CONE OF A CATHODE-RAY TUBE FOR TELEVISION IMAGE DISPLAY, COMPRISING THE STEPS OF: PROVIDING A MIXTURE HAVING THE COMPOSITION WITHIN THE RANGE LIMITED AS FOLLOWS % BY WEIGHT:
Claim 2
Independent Claim
46 words
A METHOD OF MANUFACTURING A GLASS MIXTURE INTENDED FOR THE MANUFACTURE OF GLASSES FOR THE SCREEN OF THE CONE OF A CATHODE-RAY TUBE FOR TELEVISION IMAGE DISPLAY, COMPRISING THE STEPS OF: PROVIDING A MIXTURE HAVING THE COMPOSITION WITHIN THE RANGE LIMITED AS FOLLOWS % BY WEIGHT:
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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |