US3490898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detinning of tin scraps
Assignee: Council of Scientific and Industrial Research
•
Filing: 1967-07-25
•
Granted: 1970-01-20
•
Expires: 1987-07-25
Abstract
No abstract record available.
Inventors
- 👤 Narasimhan Venkatakr
- 👤 Roshan Lal Seth
- 👤 Shnan
- 👤 Prem Behari Mathur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:20
CPC Classifications
C; C22; C22B; C22B25/00; C22B25/06; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US77987A
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US148760A
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GB189323619A
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US1737140A
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US1843060A
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US1963893A
Cited
US2011533A
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US2357429A
Cited
US2842435A
Cited
US3161465A
Cited
US3394061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |