Patent US2555901A successfully refreshed from Google Patents.
US2555901A
Expired / Lapsed
US
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Reaction products of petroleum hydrocarbon-insoluble pine-wood resin and ethylene oxide
Assignee: Hercules Powder Co
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Filing: 1949-12-01
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Granted: 1951-06-05
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Expires: 1969-12-01
Abstract
No abstract record available.
Inventors
- 👤 Alfred L Rummelsburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:34
CPC Classifications
C; C09; C09F; C09F1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A WATER-INSOLUBLE RESINOUS REACTION PRODUCT OF A PETROLEUM HYDROCARBON-INSOLUBLE PINE WOOD RESIN AND ETHYLENE OXIDE, SAID REACTION PRODUCT BEING CHARACTERIZED BY A COMBINED ETHYLENE OXIDE CONTENT OF FROM ABOUT 12% TO ABOUT 60%, BY BEING SUBSTANTIALLY FREE OF CARBOXYL ACIDITY AS EVIDENCED BY ITS A. N. (IDOPTOPYL ALCOHOL-BENZENE) AND BY HAVING A SUBSTANTIALLY REDUCED PHENOLIC HYDROXYL ACIDITY AS COMPARED WITH THE ORIGINAL PINE WOOD RESIN AS EVIDENCED BY THE RESPECTIVE A.N.''S (ETHYLENEDIAMINE).
Claim 2
Dependent Claim
72 words
A WATER-INSOLUBLE RESINOUS REACTION PRODUCT OF A PETROLEUM HYDROCARBON-INSOLUBLE PINE WOOD RESIN AND ETHYLENE OXIDE, SAID REACTION PRODUCT BEING CHARACTERIZED BY A COMBINED ETHYLENE OXIDE CONTENT OF FROM ABOUT 12% TO ABOUT 60%, BY BEING SUBSTANTIALLY FREE OF CARBOXYL ACIDITY AS EVIDENCED BY ITS A. N. (IDOPTOPYL ALCOHOL-BENZENE) AND BY HAVING A SUBSTANTIALLY REDUCED PHENOLIC HYDROXYL ACIDITY AS COMPARED WITH THE ORIGINAL PINE WOOD RESIN AS EVIDENCED BY THE RESPECTIVE A.N.''S (ETHYLENEDIAMINE).
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) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |