US2515907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis (hydroxyphenyl) alkanes
Assignee: Gulf Research and Development Co
•
Filing: 1947-12-22
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Granted: 1950-07-18
•
Expires: 1967-12-22
Abstract
No abstract record available.
Inventors
- 👤 Donald R Stevens
- 👤 Arthur C Dubbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:15
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/11; C07C37/20; C07C39/00; C07C39/12; C07C39/15; C07C39/16; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/22; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/08; C10M2207/10; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/16; C10M2207/28; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/101; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/024; C10M2211/06; C10M2211/08; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2227/00; C10M2227/08; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/08; C10N2010/14; C10N2010/16; C10N2040/00; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A NEW COMPOUND HAVING THE FOLLOWING STRUCTURAL FORMULA: WHEREIN R1 IS A SUBSTITUENT SELECTED FROM THE CLASS CONSISTING OF SECONDARY BUTYL AND TERTIARY BUTYL GROUPS AND R2 IS A SUBSTITUENT SELECTED FROM THE CLASS CONSISTING OF ALKYL, CYCLOALKYL, ARYL, ARALKYL, AND ALKARYL GROUPS, AND WHEREIN SAID ALKYL GROUP CONTAINS AT LEAST 3 CARBON ATOMS.
Claim 2
Dependent Claim
54 words
A NEW COMPOUND HAVING THE FOLLOWING STRUCTURAL FORMULA: WHEREIN R1 IS A SUBSTITUENT SELECTED FROM THE CLASS CONSISTING OF SECONDARY BUTYL AND TERTIARY BUTYL GROUPS AND R2 IS A SUBSTITUENT SELECTED FROM THE CLASS CONSISTING OF ALKYL, CYCLOALKYL, ARYL, ARALKYL, AND ALKARYL GROUPS, AND WHEREIN SAID ALKYL GROUP CONTAINS AT LEAST 3 CARBON ATOMS.
References Cited (Backward Citations)
US1961397A
Cited
US2295985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |