US2832958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing glass
Assignee: Individual
•
Filing: 1955-03-31
•
Granted: 1958-04-29
•
Expires: 1975-03-31
Abstract
No abstract record available.
Inventors
- 👤 Harvey L Penberthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:13
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/18; C03B5/183; C03B5/185; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN A METHOD OF MANUFACTURING GLASS IN A FURNACE WHICH WHEN HEATED SOLELY BY COMBUSTION HEAT HAS A MELTING ZONE CONTAINING UNMELTED BATCH, A FOAM ZONE CONTIGUOUS SAID UNMELTED BATCH, A FINING ZONE AND A WORKING ZONE, THE STEPS COMPRISING: HEATING THE GLASS IN AT LEAST THE MELTING, FOAM AND FINING ZONES OF SAID FURNACE BY COMBUSTION HEAT, AND SIMULTANEOUSLY FLOWING CONCENTRATED JOULE EFFECT CURRENTS TRANSVERSELY FROM ONE SIDE OF SAID FOAM ZONE TO THE OTHER, SO AS TO BRING SUBSTANTIALLY THE ENTIRE WIDTH OF THE FOAM ZONE UNDER THE INFLUENCE OF SAID CURRENT WHILE THE SURFACE OF SAID ZONE IS ACTED ON BY SAID COMBUSTION HEAT.
Claim 2
Dependent Claim
107 words
IN A METHOD OF MANUFACTURING GLASS IN A FURNACE WHICH WHEN HEATED SOLELY BY COMBUSTION HEAT HAS A MELTING ZONE CONTAINING UNMELTED BATCH, A FOAM ZONE CONTIGUOUS SAID UNMELTED BATCH, A FINING ZONE AND A WORKING ZONE, THE STEPS COMPRISING: HEATING THE GLASS IN AT LEAST THE MELTING, FOAM AND FINING ZONES OF SAID FURNACE BY COMBUSTION HEAT, AND SIMULTANEOUSLY FLOWING CONCENTRATED JOULE EFFECT CURRENTS TRANSVERSELY FROM ONE SIDE OF SAID FOAM ZONE TO THE OTHER, SO AS TO BRING SUBSTANTIALLY THE ENTIRE WIDTH OF THE FOAM ZONE UNDER THE INFLUENCE OF SAID CURRENT WHILE THE SURFACE OF SAID ZONE IS ACTED ON BY SAID COMBUSTION HEAT.
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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) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |