Patent US3954583A successfully refreshed from Google Patents.
US3954583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photochemical process
Assignee: Pharmacia and Upjohn Co
•
Filing: 1975-03-17
•
Granted: 1976-05-04
•
Expires: 1995-03-17
Abstract
Abstract A new process for coating materials which are susceptible to interaction with an aromatic sulfonyl nitrene which involves contacting an aromatic sulfonylazide with said material and irradiating.
Inventors
- 👤 Daniel Lednicer
- 👤 Edward E. Nishizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:18
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/655; B; B01; B01J; B01J19/00; B01J19/08; B01J19/12; B01J19/122; C; C08; C08F; C08F8/00; C08F8/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A process for coating materials which are susceptible to interaction with an aromatic sulfonyl nitrene which comprises a. contacting the said material with a compound of the generic structure ##SPC4## wherein R and R 1 are the same or different and are selected from the group consisting of hydrogen, halogen, and alkyl of one to four carbon atoms, inclusive; b. irradiating the said contacted material and compound of step (a) for a time sufficient to generate a nitrene; and c. converting the nitro group to an amino group.
Claim 2
Dependent Claim
88 words
A process for coating materials which are susceptible to interaction with an aromatic sulfonyl nitrene which comprises a. contacting the said material with a compound of the generic structure ##SPC4## wherein R and R 1 are the same or different and are selected from the group consisting of hydrogen, halogen, and alkyl of one to four carbon atoms, inclusive; b. irradiating the said contacted material and compound of step (a) for a time sufficient to generate a nitrene; and c. converting the nitro group to an amino group.
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) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |