US2602801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of dialkyl beta-propiothetins
Assignee: Goodrich Corp
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Filing: 1951-07-09
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Granted: 1952-07-08
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Expires: 1971-07-09
Abstract
No abstract record available.
Inventors
- 👤 Max E Roha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:42
CPC Classifications
C; C07; C07C; C07C381/00; C07C381/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
THE METHOD WHICH COMPRISES BRINGING TOGETHER IN A SUBSTANTIALLY NEUTRAL LIQUID MEDIUM A DIALKYL SULFIDE IN WHICH EACH ALKYL RADICAL IS A LOWER ALKYL RADICAL AND A SATURATED ALIPHATIC BETA-LACTONE, THEREBY TO OBTAIN A DIALKYL BETAPROPIOTHETIN.
Claim 2
Independent Claim
36 words
THE METHOD WHICH COMPRISES BRINGING TOGETHER IN A SUBSTANTIALLY NEUTRAL LIQUID MEDIUM A DIALKYL SULFIDE IN WHICH EACH ALKYL RADICAL IS A LOWER ALKYL RADICAL AND A SATURATED ALIPHATIC BETA-LACTONE, THEREBY TO OBTAIN A DIALKYL BETAPROPIOTHETIN.
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) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |