US3516805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodes for electric resistance welding and method of manufacture thereof
Assignee: NAKAO NETSUKAGAKU KENKYUSHO KK
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Filing: 1967-01-27
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Granted: 1970-06-23
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Expires: 1987-01-27
Abstract
No abstract record available.
Inventors
- 👤 Yozo Nakamura
- 👤 Yoshihisa Ozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:50
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/222; B23K35/40; B23K35/402; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/941; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12458; Y10T428/12493; Y10T428/12674; Y10T428/12729; Y10T428/12736; Y10T428/1275; Y10T428/12771; Y10T428/12778; Y10T428/12785; Y10T428/12792; Y10T428/12806; Y10T428/12812; Y10T428/12861; Y10T428/12903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1155974A
Cited
US1957214A
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US2214002A
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US2387903A
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US3120447A
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US2872564A
Cited
US3061463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |