US3403625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear reduction additives
Assignee: Wegematic Corp
•
Filing: 1968-01-18
•
Granted: 1968-10-01
•
Expires: 1988-01-18
Abstract
No abstract record available.
Inventors
- 👤 Jacobson David Esriel
- 👤 Ek Stig Yngve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:26
CPC Classifications
C; C06; C06B; C06B23/00; C06B23/04; F; F42; F42B; F42B5/00; F42B5/02; F42B5/24; Y; Y10; Y10S; Y10S102/00; Y10S102/704
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1005052A
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US1187779A
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US2050871A
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US2159234A
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US2131353A
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US2301043A
Cited
US2744816A
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US3009796A
Cited
US3209689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |