US2845450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical products from bark
Assignee: Rayonier Inc
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Filing: 1955-09-13
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Granted: 1958-07-29
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Expires: 1975-09-13
Abstract
No abstract record available.
Inventors
- 👤 James K Anderson
- 👤 Franklin W Herrick
- 👤 Gray Kenneth Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:43
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/82
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
56 words
A WATER-INSOLUBLE PHENOLIC ESTER PRODUCT DERIVED FROM TREE BARK BY REACTING SUBSTANTIALLY DRY BARK WITH A HEATED MONOHYDRIC ALCOHOL HAVING FROM 1 TO 4 CARBON ATOMS IN THE PRESENCE OF AN ACID CATALYST RESULTING IN AN ALCOHOLYSIS OF A PORTION OF THE BARK, AND SEPARATING THE PRODUCT FROM THE BARK RESIDUE IN SOLUTION IN THE ALCOHOL.
Claim 2
Dependent Claim
56 words
A WATER-INSOLUBLE PHENOLIC ESTER PRODUCT DERIVED FROM TREE BARK BY REACTING SUBSTANTIALLY DRY BARK WITH A HEATED MONOHYDRIC ALCOHOL HAVING FROM 1 TO 4 CARBON ATOMS IN THE PRESENCE OF AN ACID CATALYST RESULTING IN AN ALCOHOLYSIS OF A PORTION OF THE BARK, AND SEPARATING THE PRODUCT FROM THE BARK RESIDUE IN SOLUTION IN THE ALCOHOL.
Claim 3
Dependent Claim
59 words
THE PROCESS OF FORMING A WATER-INSOLUBLE PHENOLIC ESTER PRODUCT FROM TREE BARK WHICH COMPRISES REACTING THE BARK IN A SUBSTANTIALLY DRY STATE WITH A MONOHYDRIC ALCOHOL HAVING FROM 1 TO 4 CARBON ATOMS AT AN ELEVATED TEMPERATURE AND IN THE PRESENCE OF AN ACID CATALYST TO FORM SAID PRODUCT BY ACID ALCOHOLYSIS, AND DISSOLVING SAID PRODUCT IN THE ALCOHOL.
Claim 4
Dependent Claim
59 words
THE PROCESS OF FORMING A WATER-INSOLUBLE PHENOLIC ESTER PRODUCT FROM TREE BARK WHICH COMPRISES REACTING THE BARK IN A SUBSTANTIALLY DRY STATE WITH A MONOHYDRIC ALCOHOL HAVING FROM 1 TO 4 CARBON ATOMS AT AN ELEVATED TEMPERATURE AND IN THE PRESENCE OF AN ACID CATALYST TO FORM SAID PRODUCT BY ACID ALCOHOLYSIS, AND DISSOLVING SAID PRODUCT IN THE ALCOHOL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |