US3238263A
Expired / Lapsed
US
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Calcium salts of bridged phenols
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1962-12-31
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Granted: 1966-03-01
•
Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Alan A Schetelich
- 👤 Charles S Lynch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:39
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/64; C07C37/66; C10; C10M; C10M159/00; C10M159/12; C10M159/20; C10M159/22; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/11; C10M2209/111; C10M2211/00; C10M2211/04; C10M2211/042; C10M2211/044; C10M2211/06; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/04; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2219/10; C10M2219/104; C10M2219/108; C10M2221/00; C10M2221/02; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/12; C10M2225/00; C10M2225/04; C10M2227/00; C10M2227/04; C10N; C10N2040/00; C10N2040/02; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
IN THE PREPARATION OF A CALCIUM SALT OF A BRIDGED PHENOL, WHEREIN SAID BRIDGED PHENOL HAS THE FORMULA:
Claim 2
Dependent Claim
18 words
IN THE PREPARATION OF A CALCIUM SALT OF A BRIDGED PHENOL, WHEREIN SAID BRIDGED PHENOL HAS THE FORMULA:
References Cited (Backward Citations)
CA554985A
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US2461335A
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US2766291A
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US2798852A
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US2956018A
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US2937991A
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US2971014A
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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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |