Patent US3542534A successfully refreshed from Google Patents.
US3542534A
Expired / Lapsed
US
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Process for pelletizing glassmaking materials
Assignee: Individual
•
Filing: 1969-03-10
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Granted: 1970-11-24
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Expires: 1989-03-10
Abstract
No abstract record available.
Inventors
- 👤 Junnosuke Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:34
CPC Classifications
B; B01; B01J; B01J2/00; C; C03; C03B; C03B1/00; C03B1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2366473A
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US2552495A
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US3001881A
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US3065090A
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US3294555A
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US3291585A
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US3193119A
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US3234034A
Cited
US3294505A
Cited
US3451831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |