US3562269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tris(m- or p-azidosulfonyl-phenyl)-isocyanurates
Assignee: Pharmacia and Upjohn Co
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Filing: 1969-03-10
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Granted: 1971-02-09
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Expires: 1989-03-10
Abstract
Abstract THIS INVENTION IS OF A NOVEL GROUP OF TRIS(M- OR PAZIDOSULFONYLPHENYL)-ISOCYANURATES OPTIONALLY HAVING HALO AND/OR AKLY SUBSTITUENTS IN THE PHENYL RING, ONE OF THE POSITIONS ORTHO IN RESPECT TO AZIDOSULFONYL BEING UNSUBSTITUTED. COMPOUNDS OF THE INVENTION ARE USEFUL AS BLOWING AGENTS IN HIGH POLYMERS, AND AS CROSS-LINE PHOTORESIST SYSTEMS AND ELASTOMERS.
Inventors
- 👤 Henri Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:50
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C07D251/34; G; G03; G03F; G03F7/00; G03F7/004; G03F7/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |