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US2515906A Expired / Lapsed US ⏱️ 0.0 years remaining

Bis (hydroxyphenyl) compounds

Assignee: Gulf Research and Development Co
•
Filing: 1947-12-22
•
Granted: 1950-07-18
•
Expires: 1967-12-22
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Abstract

No abstract record available.

Inventors

  • 👤 Donald R Stevens
  • 👤 Arthur C Dubbs

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 10:57
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/182; C10L1/183; C10L1/1835; C07; C07C; C07C37/00; C07C37/11; C07C37/20; C07C39/00; C07C39/12; C07C39/15; C07C39/16; C08; C08K; C08K5/00; C08K5/04; C08K5/13; 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 8 words
A NEW COMPOUND HAVING THE FOLLOWING STRUCTURAL FORMULA:
Claim 2
Dependent Claim 8 words
A NEW COMPOUND HAVING THE FOLLOWING STRUCTURAL FORMULA:

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

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