US2635976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making synthetic constructional boards and products thereof
Assignee: Plywood Res Foundation
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Filing: 1948-06-15
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Granted: 1953-04-21
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Expires: 1968-06-15
Abstract
No abstract record available.
Inventors
- 👤 John G Meiler
- 👤 Earl G Hallonquist
- 👤 August H Rauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:21
CPC Classifications
C; C08; C08L; C08L97/00; C08L97/02; C08L11/00; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/10; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L61/00; C08L61/04; C08L61/06; C08L9/00; C08L9/02; C08L9/06; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24397; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31906; Y10T428/31942; Y10T428/31949; Y10T428/31957; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE METHOD OF MAKING CONSTRUCTIONAL BOARD PRODUCTS WHICH INCLUDE AT LEAST ONE SYNTHETIC SURFACE PORTION ON EACH CONSTRUCTIONAL BOARD COMPRISING MIXING A WATER SOLUBLE PHENOL PER SEFORMALDEHYDE RESINOUS CONDENSATION PRODUCT AND A SYNTHETIC ELASTOMER THEREFOR IN LATEX FORM TO FORM A BINDING ADMIXTURE, SAID ELASTOMER BEING SELECTED FROM THE GROUP CONSISTING OF BUTADIENEACRYLONITRILE COPOLYMER, BUTADIENE-STYRENE COPOLYMER, 2-CHLOROBUTADINE-1,3 POLYMER AND VINYL CHLORIDE POLYMER; MIXING SAID ADMIXTURE WITH RELATIVELY SMALL PIECES OF LIGNOCELLULOSIC MATERIAL TO FORM AN AGGREGATE; AND SUBSEQUENTLY HEATING AND PRESSING SAID AGGREGATE TO CONSOLIDATE THE SAME AT TEMPERATURES OF BETWEEN ABOUT 100* C AND ABOUT 300* C AND AT PRESSURES OF BETWEEN ABOUT 50 LBS. PER SQUARE INCH AND ABOUT 500 LBS. PER SQUARE INCH AND FOR ABOUT 2 MINUTES TO ABOUT 30 MINUTES.
Claim 2
Independent Claim
125 words
THE METHOD OF MAKING CONSTRUCTIONAL BOARD PRODUCTS WHICH INCLUDE AT LEAST ONE SYNTHETIC SURFACE PORTION ON EACH CONSTRUCTIONAL BOARD COMPRISING MIXING A WATER SOLUBLE PHENOL PER SEFORMALDEHYDE RESINOUS CONDENSATION PRODUCT AND A SYNTHETIC ELASTOMER THEREFOR IN LATEX FORM TO FORM A BINDING ADMIXTURE, SAID ELASTOMER BEING SELECTED FROM THE GROUP CONSISTING OF BUTADIENEACRYLONITRILE COPOLYMER, BUTADIENE-STYRENE COPOLYMER, 2-CHLOROBUTADINE-1,3 POLYMER AND VINYL CHLORIDE POLYMER; MIXING SAID ADMIXTURE WITH RELATIVELY SMALL PIECES OF LIGNOCELLULOSIC MATERIAL TO FORM AN AGGREGATE; AND SUBSEQUENTLY HEATING AND PRESSING SAID AGGREGATE TO CONSOLIDATE THE SAME AT TEMPERATURES OF BETWEEN ABOUT 100* C AND ABOUT 300* C AND AT PRESSURES OF BETWEEN ABOUT 50 LBS. PER SQUARE INCH AND ABOUT 500 LBS. PER SQUARE INCH AND FOR ABOUT 2 MINUTES TO ABOUT 30 MINUTES.
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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) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |