US2993032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent copolymers
Assignee: California Research LLC
•
Filing: 1956-02-03
•
Granted: 1961-07-18
•
Expires: 1976-02-03
Abstract
No abstract record available.
Inventors
- 👤 Frank A Stuart
- 👤 William T Stewart
- 👤 Lowe Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:28
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/005; C10M145/00; C10M145/02; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1812; C08F220/1818; C10M143/00; C10M143/08; C10M143/10; C10M145/10; C10M145/12; C10M145/14; C10M145/16; C10M149/00; C10M149/02; C08F222/00; C08F222/10; C08F222/12; C08F222/20; C08F222/205; C10M2203/00; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2205/00; C10M2205/02; C10M2205/028; C10M2205/04; C10M2205/22; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/108; C10M2209/109; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/024; C10M2217/04; C10M2217/06; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2227/00; C10M2227/02; C10M2229/00; Y; Y10; Y10S; Y10S526/00; Y10S526/933
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A COPOLYMER OF AT LEAST THE (A) AND (B) MONOMERS OF THE FOLLOWING MONOMERS: (A) HIGHER ALKYL METHACRYLATE HAVING FROM 8 TO 30 CARBON ATOMS IN THE ALKYL GROUP, (B) MONOESTER OF CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF ESTER OF METHACRYLIC ACID AND HALF ESTER OF MALEIC ACID IN WHICH THE CARBOXYL GROUP OF SAID ACID IS ESTERIFIED WITH A POLYHYDROXY SUBSTITUTED ALKYL ALCOHOL SELECTED FROM THE GROUP CONSISTING OF PENTAERYTHRITOL, DIPENTAERYTHRITOL AND TRIPENTAERYTHRITOL AND (C) METHACRYLIC ACID, SAID MONOMERS BEING PRESENT IN THE COPOLYMER IN THE RATIO OF FROM ABOUT 1 TO 20 MONOMER UNITS OF THE OIL-SOLUBILIZING COMPOUND (A) FOR EACH MONOMER UNIT OF THE ESTER (B) AND THE ACIDIC COMPOUND (C).
Claim 2
Dependent Claim
116 words
A COPOLYMER OF AT LEAST THE (A) AND (B) MONOMERS OF THE FOLLOWING MONOMERS: (A) HIGHER ALKYL METHACRYLATE HAVING FROM 8 TO 30 CARBON ATOMS IN THE ALKYL GROUP, (B) MONOESTER OF CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF ESTER OF METHACRYLIC ACID AND HALF ESTER OF MALEIC ACID IN WHICH THE CARBOXYL GROUP OF SAID ACID IS ESTERIFIED WITH A POLYHYDROXY SUBSTITUTED ALKYL ALCOHOL SELECTED FROM THE GROUP CONSISTING OF PENTAERYTHRITOL, DIPENTAERYTHRITOL AND TRIPENTAERYTHRITOL AND (C) METHACRYLIC ACID, SAID MONOMERS BEING PRESENT IN THE COPOLYMER IN THE RATIO OF FROM ABOUT 1 TO 20 MONOMER UNITS OF THE OIL-SOLUBILIZING COMPOUND (A) FOR EACH MONOMER UNIT OF THE ESTER (B) AND THE ACIDIC COMPOUND (C).
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |