Patent US2515909A successfully refreshed from Google Patents.
US2515909A
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Glyoxal-tertiary-butyl cresol condensation products
Assignee: Gulf Research and Development Co
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Filing: 1948-05-21
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Granted: 1950-07-18
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Expires: 1968-05-21
Abstract
No abstract record available.
Inventors
- 👤 Donald R Stevens
- 👤 Arthur C Dubbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:17
CPC Classifications
C; C07; C07D; C07D493/00; C07D493/02; C07D493/04; C07C; C07C37/00; C07C37/11; C07C37/20; C07C39/00; C07C39/12; C07C39/15; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/22; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/025; C10M2207/026; C10M2207/04; C10M2207/044; 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; C10M2211/024; C10M2211/06; C10M2211/08; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/12; C10M2223/121; C10M2227/00; C10M2227/08; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/08; C10N2010/14; C10N2010/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
NEW CHEMICAL PRODUCTS OBTAINED BY CONDENSING A MONO-TERTIARY-BUTYL CRESOL WITH GLYOXAL IN THE PRESENCE OF A CONDENSATION CATALYST AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 0* TO ABOUT 100*C.
Claim 2
Dependent Claim
30 words
NEW CHEMICAL PRODUCTS OBTAINED BY CONDENSING A MONO-TERTIARY-BUTYL CRESOL WITH GLYOXAL IN THE PRESENCE OF A CONDENSATION CATALYST AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 0* TO ABOUT 100*C.
References Cited (Backward Citations)
US1707181A
Cited
US2333548A
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 |