Patent US3305499A successfully refreshed from Google Patents.
US3305499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article of pressed wood and process for making same
Assignee: American Radiator and Standard Sanitary Corp
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Filing: 1965-06-04
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Granted: 1967-02-21
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Expires: 1985-06-04
Abstract
No abstract record available.
Inventors
- 👤 Rowland S Bevans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:24
CPC Classifications
C; C08; C08L; C08L97/00; C08L97/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
AN ARTICLE OF PRESSED WOOD PRODUCED BY A PROCESS WHICH COMPRISES THE FOLLOWING STEPS: TREATING LIGNO-CELLULOSIC PARTICLES WITH A RESIN, SOAKING THE RESIN-TREATED LIGNO-CELLULOSIC PARTICLES IN LIQUID AMMONIA UNTIL SAID PARTICLES ARE SUBSTANTIALLY COMPLETELY IMPREGNATED WITH THE LIQUID AMMONIA, SEPARATING THE RESIN-TREATED, IMPREGNATED PARTICLES FROM THE LIQUID AMMONIA, AND THEN MOLDING THE RESIN-TREATED, IMPREGNATED PARTICLES INTO A DESIRED FORM AT A PRESSURE UP TO ABOUT 300 TO 500 LBS./SQ. IN. AND A TEMPERATURE FROM ABOUT 100 TO 200*C.
Claim 2
Dependent Claim
78 words
AN ARTICLE OF PRESSED WOOD PRODUCED BY A PROCESS WHICH COMPRISES THE FOLLOWING STEPS: TREATING LIGNO-CELLULOSIC PARTICLES WITH A RESIN, SOAKING THE RESIN-TREATED LIGNO-CELLULOSIC PARTICLES IN LIQUID AMMONIA UNTIL SAID PARTICLES ARE SUBSTANTIALLY COMPLETELY IMPREGNATED WITH THE LIQUID AMMONIA, SEPARATING THE RESIN-TREATED, IMPREGNATED PARTICLES FROM THE LIQUID AMMONIA, AND THEN MOLDING THE RESIN-TREATED, IMPREGNATED PARTICLES INTO A DESIRED FORM AT A PRESSURE UP TO ABOUT 300 TO 500 LBS./SQ. IN. AND A TEMPERATURE FROM ABOUT 100 TO 200*C.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |