US2826592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy esters of phosphorus-containing acids and their use in treating textiles
Assignee: Shell Development Co
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Filing: 1954-01-27
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Granted: 1958-03-11
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Expires: 1974-01-27
Abstract
No abstract record available.
Inventors
- 👤 Albert C Mueller
- 👤 Carl W Schroeder
- 👤 Edward C Shokal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:51
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/655; C07F9/65502; D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/292
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A NEUTRAL ESTER OF (1) A PHOSPHORUS-CONTAINING ACID COMPONENT OF THE GROUP CONSISTING OF
Claim 2
Dependent Claim
14 words
A NEUTRAL ESTER OF (1) A PHOSPHORUS-CONTAINING ACID COMPONENT OF THE GROUP CONSISTING OF
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) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |