US2672483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-diphenylacetyl-1,3-indandione and salts thereof
Assignee: Pharmacia and Upjohn Co
•
Filing: 1951-07-16
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Granted: 1954-03-16
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Expires: 1971-07-16
Abstract
No abstract record available.
Inventors
- 👤 Donald G Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:17
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/587; C07C49/657; C07C49/665; C07C49/67; C07C49/703; C07C49/747
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) 2-DIPHENYLACETYL-1,3-INDANDIONE, HAVING THE FORMULA:
Claim 2
Dependent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) 2-DIPHENYLACETYL-1,3-INDANDIONE, HAVING THE FORMULA:
References Cited (Backward Citations)
US2310949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |