US3072672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain oxazolidininone-2 and pyrrolidinone-2 derivatives of aromatic sulfonamides and process
Assignee: Dow Chemical Co
•
Filing: 1961-04-17
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Granted: 1963-01-08
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Expires: 1981-04-17
Abstract
No abstract record available.
Inventors
- 👤 Richard A Hickner
- 👤 Claude I Judd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:58
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D207/263; C07D207/27; C07D263/00; C07D263/02; C07D263/08; C07D263/16; C07D263/18; C07D263/20; C07D263/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
A CHEMICAL COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
6 words
A CHEMICAL COMPOUND HAVING THE FORMULA:
Claim 3
Dependent Claim
1 words
N-(1-(5-METHYL-2-OXO-3-OXAZOLIDINYL)ETHYL)BENZENESULFONAMIDE.
Claim 4
Dependent Claim
1 words
N-(1-(5-METHYL-2-OXO-3-OXAZOLIDINYL)ETHYL)BENZENESULFONAMIDE.
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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |