US2773847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bark components as resin ingredients
Assignee: Weyerhaeuser Timber Co
•
Filing: 1954-05-04
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Granted: 1956-12-11
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Expires: 1974-05-04
Abstract
No abstract record available.
Inventors
- 👤 Robert D Pauley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:08
CPC Classifications
C; C08; C08L; C08L97/00; C08L97/007; C08L61/00; C08L61/04; C08L61/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
A PROCESS FOR MAKING A RESIN COMPRISING DISSOLVING A BASIC REACTING COMPOUND IN WATER, ADDING A BARK COMPONENT SEPARATED FROM THE BARK OF A CONIFEROUS TREE AND CONTAINING AT LEAST ABOUT 68% OF CORK, STIRRING THE MIXTURE UNTIL THE HEAT OF REACTION IS DISSIPATED AND THE BARK COMPONENT IS DISPERSED AND DISSOLVED, ADDING TO THE REACTION MIXTURE A PHENOLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF PHENOL, CRESOL AND XYLENOL, ADDING AN ALDEHYDR SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE AND PARAFORMALDEHYDE, AND REACTING THE RESULTING MIXTURE TO PRODUCE A RESIN.
References Cited (Backward Citations)
US1455762A
Cited
US2128894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |