US3250603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating a preformed glassy object
Assignee: Individual
•
Filing: 1961-03-14
•
Granted: 1966-05-10
•
Expires: 1981-03-14
Abstract
No abstract record available.
Inventors
- 👤 Charles W Schott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:30
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/229; C03C2217/25; C03C2217/269; C03C2217/28; C03C2217/282; C03C2218/00; C03C2218/10; C03C2218/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
THE METHOD OF TRATING A PREFORMED GLASSY OBJECT AT TEMPERATURES ABOVE THOSE AT WHICH IT NORMALLY BECOMES PLASTIC WITHOUT LOSS OF SHAPE COMPRISING THE STEPS OF COATING SAID OBJECT WITH A NON-REACTIVE MATERIAL FINER THAN 200 MESH AND HAVING A MELTING POINT ABOVE THE DESIRED TEMPERATURE OF TREATMENT, THEREAFTER SUBJECTING SAID OBJECT TO A TEMPERING OPERATION BY HEATING SAID OBJECT TO THE DEISRED TEMPERATURE, AND THEN QUENCHING SAID OBJECT.
Claim 2
Independent Claim
69 words
THE METHOD OF TRATING A PREFORMED GLASSY OBJECT AT TEMPERATURES ABOVE THOSE AT WHICH IT NORMALLY BECOMES PLASTIC WITHOUT LOSS OF SHAPE COMPRISING THE STEPS OF COATING SAID OBJECT WITH A NON-REACTIVE MATERIAL FINER THAN 200 MESH AND HAVING A MELTING POINT ABOVE THE DESIRED TEMPERATURE OF TREATMENT, THEREAFTER SUBJECTING SAID OBJECT TO A TEMPERING OPERATION BY HEATING SAID OBJECT TO THE DEISRED TEMPERATURE, AND THEN QUENCHING SAID OBJECT.
References Cited (Backward Citations)
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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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |