US3296003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass manufacture
Assignee: Libbey Owens Ford Glass Co
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Filing: 1963-09-20
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Granted: 1967-01-03
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Expires: 1983-09-20
Abstract
No abstract record available.
Inventors
- 👤 Howard R Swift
- 👤 Lawrence B Ginther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:51
CPC Classifications
C; C03; C03C; C03C1/00; C03C1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A METHOD OF CHANGING FROM THE PRODUCTION OF A GLASS OF ONE KIND TO A GLASS OF A SIMILAR COMPOSITION BUT DIFFERENT KIND IN A CONTINUOUSLY OPERATING TANK FURNACE DURING THE CONTINUOUS OPERATION THEREOF, THE STEPS OF ADDING TO SAID FIRST MENTIONED GLASS IN SAID CONTINUOUSLY OPERATING FURNACE GLASS BATCH MATERIALS CALCULATED TO CHANGE THE CONTENTS OF SAID FURNACE FROM SAID FIRST MENTIONED GLASS TO SAID SECOND MENTIONED GLASS DURING A TRANSITION PERIOD, AND ADDITIONALLY ADDING A MATERIAL THAT WILL INCREASE THE DENSITY OF THE RESULTING GLASS TO SAID ADDED GLASS BATCH MATERIALS.
Claim 2
Dependent Claim
94 words
IN A METHOD OF CHANGING FROM THE PRODUCTION OF A GLASS OF ONE KIND TO A GLASS OF A SIMILAR COMPOSITION BUT DIFFERENT KIND IN A CONTINUOUSLY OPERATING TANK FURNACE DURING THE CONTINUOUS OPERATION THEREOF, THE STEPS OF ADDING TO SAID FIRST MENTIONED GLASS IN SAID CONTINUOUSLY OPERATING FURNACE GLASS BATCH MATERIALS CALCULATED TO CHANGE THE CONTENTS OF SAID FURNACE FROM SAID FIRST MENTIONED GLASS TO SAID SECOND MENTIONED GLASS DURING A TRANSITION PERIOD, AND ADDITIONALLY ADDING A MATERIAL THAT WILL INCREASE THE DENSITY OF THE RESULTING GLASS TO SAID ADDED GLASS BATCH MATERIALS.
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |