US2599299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aliphatic azo compounds having guanyl radicals on tertiary carbon attached to azo nitrogen
Assignee: EIDP Inc
•
Filing: 1950-06-23
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Granted: 1952-06-03
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Expires: 1970-06-23
Abstract
No abstract record available.
Inventors
- 👤 Robert W Upson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:59
CPC Classifications
C; C07; C07C; C07C255/00; C07C255/63; C07C255/65; C08; C08F; C08F4/00; C08F4/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
2 words
2,2''-DIGUANYL-2,2''-AZOPROPANE DIHYDROCHLORIDE.
Claim 2
Dependent Claim
2 words
2,2''-DIGUANYL-2,2''-AZOPROPANE DIHYDROCHLORIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |