US3806533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetracarboxyalkyl orthosilicates
Assignee: Indopco Inc
•
Filing: 1972-04-14
•
Granted: 1974-04-23
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Expires: 1992-04-14
Abstract
Abstract BUILDERS FOR USE IN SYNTHETIC DETERGENT COMPOSITION ARE DESCRIBED; SAID BUILDERS COMPRISING REACTION PRODUCTS OF SILICO TETRAHALIDES AND HYDROXY SUBSTITUTED CARBOXYLIC ACIDS.
Inventors
- 👤 M Tessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:01
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/04
Claims Analysis
Total Claims: 0
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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) | 1977-04-22 | 1977-10-22 | 1978-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-22 | 1981-10-22 | 1982-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-22 | 1985-10-22 | 1986-04-23 | $7700.00 | Window Closed / Lapsed |