Patent FR750155A successfully refreshed from Google Patents.
Patent US3149085A successfully refreshed from Google Patents.
US3149085A
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Method of making synthetic resin from lignin and an epoxide and resulting product
Assignee: West Virginia Pulp and Paper Co
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Filing: 1958-10-20
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Granted: 1964-09-15
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Expires: 1978-10-20
Abstract
No abstract record available.
Inventors
- 👤 Frank J Ball
- 👤 Walter K Dougherty
- 👤 Jr Howard H Moorer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:38
CPC Classifications
C; C08; C08L; C08L63/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31525; Y10T428/31529
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A METHOD OF MAKING A SYNTHETIC RESINOUS REACTION PRODUCT WHICH COMPRISES REACTING ALKALI LIGNIN WITH AN OXIRANE EPOXIDE WHILE SAID ALKALI LIGNIN AND SAID OXIRANE EPOXIDE ARE IN MUTUAL SOLUTION, SAID CONSTITUTING AT LEAST ABOUT 5% OF THE COMBINED WEIGHT OF SAID LIGNIN AND SAID EPOXIDE.
Claim 2
Independent Claim
46 words
A METHOD OF MAKING A SYNTHETIC RESINOUS REACTION PRODUCT WHICH COMPRISES REACTING ALKALI LIGNIN WITH AN OXIRANE EPOXIDE WHILE SAID ALKALI LIGNIN AND SAID OXIRANE EPOXIDE ARE IN MUTUAL SOLUTION, SAID CONSTITUTING AT LEAST ABOUT 5% OF THE COMBINED WEIGHT OF SAID LIGNIN AND SAID EPOXIDE.
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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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |