Patent US2723285A successfully refreshed from Google Patents.
US2723285A
Expired / Lapsed
US
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Fractional esters of polycarboxy acids with certain tetralols
Assignee: Baker Petrolite LLC
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Filing: 1952-12-02
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Granted: 1955-11-08
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Expires: 1972-12-02
Abstract
No abstract record available.
Inventors
- 👤 Groote Melvin De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:51
CPC Classifications
C; C10; C10G; C10G33/00; Y; Y10; Y10S; Y10S206/00; Y10S206/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
HYDROPHILE SYNTHETIC PRODUCTS; SAID HYDROPHILE SYNTHETIC PRODUCTS BEING FRACTIONAL ESTERS OF (A) A POLYCARBOXY ACID SELECTED FROM THE CLASS CONSISTING OF ACYCLIC AD ISOCYCLIC DICARBOXY AND TRICARBOXY ACIDS COMPOSED OF CARBON, HYDROGEN AND OXYGEN AND HAVING NOT MORE THAN 8 CARBON ATOMS WITH (B) A TETRALOL SELECTED FROM THE CLASS CONSISTING OF TETRALOLS OF THE FORMULA
Claim 2
Dependent Claim
56 words
HYDROPHILE SYNTHETIC PRODUCTS; SAID HYDROPHILE SYNTHETIC PRODUCTS BEING FRACTIONAL ESTERS OF (A) A POLYCARBOXY ACID SELECTED FROM THE CLASS CONSISTING OF ACYCLIC AD ISOCYCLIC DICARBOXY AND TRICARBOXY ACIDS COMPOSED OF CARBON, HYDROGEN AND OXYGEN AND HAVING NOT MORE THAN 8 CARBON ATOMS WITH (B) A TETRALOL SELECTED FROM THE CLASS CONSISTING OF TETRALOLS OF THE FORMULA
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) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |