US2574803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bonding plywood, an adhesive therefor and a process of making it
Assignee: Weyerhaeuser Timber Co
•
Filing: 1947-03-29
•
Granted: 1951-11-13
•
Expires: 1967-03-29
Abstract
No abstract record available.
Inventors
- 👤 William G Van Beckum
- 👤 Harold L Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:05
CPC Classifications
C; C09; C09J; C09J197/00; C09J197/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A SPREADABLE ADHESIVE CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF COMMINUTED PARENCHYMA TISSUE BARK POWDER DERIVED FROM BARK PHLOEM AND AN AQUEOUS SOLUTION OF A BASIC ACTING SOLUBLE COMPOUND OF AN ALKALI METAL IN AN AMOUNT TO CONFER UPON THE RESULTING AQUEOUSLY DISPERSED MASS A PH BETWEEN ABOUT 3.5 AND ABOUT 10, SAID SOLUTION BEING PRESENT IN SUFFICIENT VOLUME TO DISPERSE THE REACTION PRODUCT.
Claim 2
Dependent Claim
64 words
A SPREADABLE ADHESIVE CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF COMMINUTED PARENCHYMA TISSUE BARK POWDER DERIVED FROM BARK PHLOEM AND AN AQUEOUS SOLUTION OF A BASIC ACTING SOLUBLE COMPOUND OF AN ALKALI METAL IN AN AMOUNT TO CONFER UPON THE RESULTING AQUEOUSLY DISPERSED MASS A PH BETWEEN ABOUT 3.5 AND ABOUT 10, SAID SOLUTION BEING PRESENT IN SUFFICIENT VOLUME TO DISPERSE THE REACTION PRODUCT.
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) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |