Patent US3142747A successfully refreshed from Google Patents.
US3133072A
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Quaternary ammonium cyclic imides
Assignee: Hollichem Corp
•
Filing: 1962-01-16
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Granted: 1964-05-12
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Expires: 1982-01-16
Abstract
No abstract record available.
Inventors
- 👤 Jr William J Shibe
- 👤 Sittenfield Marcus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:02
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; C07D221/00; C07D221/02; C07D221/04; C07D221/06; C07D221/14; C07D261/00; C07D261/20; C07D263/00; C07D263/52; C07D263/54; C07D263/58; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/19; C09; C09K; C09K3/00; C09K3/16; C09K8/00; C09K8/02; C09K8/03; C09K8/035; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19; Y10S260/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A QUATERNARY AMMONIUM AROMATIC CYCLIC IMIDE WHEREIN THE QUATERNARY AMMONIUM CATION HAS THE FORMULA:
Claim 2
Dependent Claim
14 words
A QUATERNARY AMMONIUM AROMATIC CYCLIC IMIDE WHEREIN THE QUATERNARY AMMONIUM CATION HAS THE FORMULA:
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |