US3481952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(1-oxide-2,2,5,5-tetra lower alkyl pyrrolidinyl-3)-maleimides
Assignee: SYNBAR ASSOCIATES
•
Filing: 1965-12-09
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Granted: 1969-12-02
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Expires: 1985-12-09
Abstract
No abstract record available.
Inventors
- 👤 Harden M Mcconnell
- 👤 Osbie H Griffith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:54
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/58; B; B23; B23H; B23H3/00; B23H3/08; C; C12; C12Q; C12Q1/00; C12Q1/68; Y; Y10; Y10S; Y10S530/00; Y10S530/806; Y10T; Y10T436/00; Y10T436/14; Y10T436/142222; Y10T436/143333; Y10T436/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1915334A
Cited
US2075359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |