Patent US2628245A successfully refreshed from Google Patents.
US2628245A
Expired / Lapsed
US
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Trialkylsilyladipic acid
Assignee: Dow Silicones Corp
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Filing: 1950-12-07
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Granted: 1953-02-10
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Expires: 1970-12-07
Abstract
No abstract record available.
Inventors
- 👤 Jr John L Speier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:08
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/081
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A COMPOUND HAVING THE GENERAL FORMULA R3SICH(CH2CH2COOH)(CH2COOH) IN WHICH R IS AN ALKYL RADICAL.
Claim 2
Dependent Claim
14 words
A COMPOUND HAVING THE GENERAL FORMULA R3SICH(CH2CH2COOH)(CH2COOH) IN WHICH R IS AN ALKYL RADICAL.
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) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |