US3829456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making t-butyl 2,4,5-trichloro phenyl carbonate
Assignee: ATK Launch Systems LLC
•
Filing: 1972-04-28
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Granted: 1974-08-13
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Expires: 1992-04-28
Abstract
Abstract A PROCESS FOR PREPARING T-BUTYL 2,4,5-TRICHLOROPHENYL CARBONATE, USEFUL IN THE SYNTHESIS OF PEPTIDES.
Inventors
- 👤 H Berman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:30
CPC Classifications
C; C07; C07C; C07C68/00; C07C68/06; C07C69/00; C07C69/96
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |