Patent US3188190A successfully refreshed from Google Patents.
US3188190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for fire polishing
Assignee: Union Carbide Corp
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Filing: 1961-10-31
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Granted: 1965-06-08
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Expires: 1981-10-31
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:15
CPC Classifications
C; C03; C03B; C03B29/00; C03B29/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
METHOD FOR FIRE POLISHING A GLASS ARTICLE COMPRISING PRESENTING FOR FIRE POLISHING THE ARTICLE FOR FIRE POLISHING TO AN AIR-FUEL GAS FLAME MIXTURE, AND REPLACING SAID MIXTURE WITH AN OXYGEN-FUEL GAS FLAME MIXTURE OF GREATER INTENSITY DURING THE PERIOD THE ARTICLE IS IN FIRE-POLISHING POSITION.
Claim 2
Dependent Claim
45 words
METHOD FOR FIRE POLISHING A GLASS ARTICLE COMPRISING PRESENTING FOR FIRE POLISHING THE ARTICLE FOR FIRE POLISHING TO AN AIR-FUEL GAS FLAME MIXTURE, AND REPLACING SAID MIXTURE WITH AN OXYGEN-FUEL GAS FLAME MIXTURE OF GREATER INTENSITY DURING THE PERIOD THE ARTICLE IS IN FIRE-POLISHING POSITION.
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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |