US2680748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beta conidendrol and process for making the same
Assignee: Fort James Corp
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Filing: 1950-09-26
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Granted: 1954-06-08
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Expires: 1970-09-26
Abstract
No abstract record available.
Inventors
- 👤 Erdtman Holger Gustaf Henrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:29
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D307/92; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/04; C10M2207/044
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
62 words
THE PROCESS OF MAKING BETA CONIDENDROL (BETA 1,2,3,4-TETRAHYDRO - 6,7 - DIHYDROXY - 4(3''4'' - DIHYDROXYPHENYL) - 3 - (HYDROXYMETHYL)2-NAPHTHOIC ACID-GAMMA-LACTONE), WHICH COMPRISES HEATING CONIDENDRIN (ALPHA 1,2,3,4-TETRAHYDRO - 6 - HYDROXY - 7 - METHOXY - 4 - (3''METHOXY - 4'' - HYDROXYPHENYL) - 3 - (HYDROXYMETHYL)2-NAPHTHOIC ACID-GAMMA-LACTONE) WITH AN AMINE SALT UNTIL THE CONIDENDRIN HAS BEEN SUBSTANTIALLY CONVERTED TO BETA COINDENDROL.
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) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |