Patent US3023136A successfully refreshed from Google Patents.
US3023136A
Expired / Lapsed
US
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Chipwood articles of high compressive strength and processes for producing the same
Assignee: Individual
•
Filing: 1957-12-17
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Granted: 1962-02-27
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Expires: 1977-12-17
Abstract
No abstract record available.
Inventors
- 👤 Himmelbeber Max
- 👤 Hagen Gustav
- 👤 Froede Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:27
CPC Classifications
C; C08; C08L; C08L97/00; C08L97/02; Y; Y10; Y10S; Y10S264/00; Y10S264/07; Y10T; Y10T428/00; Y10T428/26; Y10T428/268; Y10T428/269
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A CHIPWOOD ARTICLE OF HIGH COMPRESSIVE STRENGTH COMPRISING CHIPPED WOOD PARTICLES HAVING LENGTHS IN THE RANGE OF 4-18 MM, WIDTHS IN THE RANGE OF 1-20 MM, AND THICKNESS IN THE RANGE OF 0.1-1.2 MM, BONDED TOGETHER AS A FIBROUS MASS BY 5-20% BY WEIGHT, BASED ON THE CHIPPED WOOD, OF A CURED POLYCONDENSATION RESIN, THE INTERSTICES BETWEEN THE BONDED CHIPPED WOOD PARTICLES BEING SUBSTANTIALLY FILLED WITH PARTICLES OF AN ORGANIC RESIN EXPANDED INTO CELLULAR FORM, WHICH PARTICLES OF ORGANIC RESIN ARE BONDED IN SAID ARTICLE BY SAID CURED POLYCONDENSATION RESINS TO FORM A CHIPWOOD ARTICLE WITH THE CHIPPED WOOD PARTICLES AND THE PARTICLES OF THE ORGANIC RESIN EXPANDED INTO CELLULAR FORM INTERBONDED BY SAID CURED POLYCONDENSATION RESIN.
Claim 2
Dependent Claim
117 words
A CHIPWOOD ARTICLE OF HIGH COMPRESSIVE STRENGTH COMPRISING CHIPPED WOOD PARTICLES HAVING LENGTHS IN THE RANGE OF 4-18 MM, WIDTHS IN THE RANGE OF 1-20 MM, AND THICKNESS IN THE RANGE OF 0.1-1.2 MM, BONDED TOGETHER AS A FIBROUS MASS BY 5-20% BY WEIGHT, BASED ON THE CHIPPED WOOD, OF A CURED POLYCONDENSATION RESIN, THE INTERSTICES BETWEEN THE BONDED CHIPPED WOOD PARTICLES BEING SUBSTANTIALLY FILLED WITH PARTICLES OF AN ORGANIC RESIN EXPANDED INTO CELLULAR FORM, WHICH PARTICLES OF ORGANIC RESIN ARE BONDED IN SAID ARTICLE BY SAID CURED POLYCONDENSATION RESINS TO FORM A CHIPWOOD ARTICLE WITH THE CHIPPED WOOD PARTICLES AND THE PARTICLES OF THE ORGANIC RESIN EXPANDED INTO CELLULAR FORM INTERBONDED BY SAID CURED POLYCONDENSATION RESIN.
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) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |