Patent US3532490A successfully refreshed from Google Patents.
US3532490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of metal powders and coatings
Assignee: National Research Development Corp UK
•
Filing: 1968-01-18
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Granted: 1970-10-06
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Expires: 1988-01-18
Abstract
No abstract record available.
Inventors
- 👤 Alfred Richard Burkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:40
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/24; B22F9/26; C; C22; C22B; C22B3/00; C22B3/20; C22B3/26; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3061424A
Cited
US3104971A
Cited
US3251646A
Cited
US3193381A
Cited
US3224873A
Cited
US3194652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |