Patent US3245870A successfully refreshed from Google Patents.
US3245870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing a water-resistant and fire-retardant lignocellulosic product
Assignee: AGUINALDO DEV CORP
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Filing: 1964-05-14
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Granted: 1966-04-12
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Expires: 1984-05-14
Abstract
No abstract record available.
Inventors
- 👤 Jr George Otto Orth
- 👤 Claude V Pevey
- 👤 Reichman Everett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:56
CPC Classifications
D; D21; D21J; D21J1/00; D21J1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS OF PRODUCING A WATER-RESISTANT AND FIRERETARDANT LIGNOCELLULOSIC PRODUCT COMPRISING THE STEPS OF WETTING LIGNOCELLULOSIC FIBERS WITH A SOLUTION CONTAINING ROSIN SOZE AND A PRECIPITATING AGENT SELECTED FROM THE GROUP CONSISTING OF ALUM AND AN ALUMINATE, ADJUSTING THE PH TO AN ACIDIC CONDITION BY THE CONCOMITANT USE OF BUFFERED BORIC ACID WITH SAID PRECIPITATING AGENT FOR PRECIPITATION OF THE ROSIN SIZE ON SAID FIBERS, AND DRYING THE FIBERS AND USING SAID BUFFERED BORIC ACID TO KEEP THE PH LOW ENOUGH DURING THE DRYING TO MAINTAIN SAID PRECIPITATION OF THE ROSIN SOZE FOR SIZING THE FIBERS.
Claim 2
Dependent Claim
96 words
A PROCESS OF PRODUCING A WATER-RESISTANT AND FIRERETARDANT LIGNOCELLULOSIC PRODUCT COMPRISING THE STEPS OF WETTING LIGNOCELLULOSIC FIBERS WITH A SOLUTION CONTAINING ROSIN SOZE AND A PRECIPITATING AGENT SELECTED FROM THE GROUP CONSISTING OF ALUM AND AN ALUMINATE, ADJUSTING THE PH TO AN ACIDIC CONDITION BY THE CONCOMITANT USE OF BUFFERED BORIC ACID WITH SAID PRECIPITATING AGENT FOR PRECIPITATION OF THE ROSIN SIZE ON SAID FIBERS, AND DRYING THE FIBERS AND USING SAID BUFFERED BORIC ACID TO KEEP THE PH LOW ENOUGH DURING THE DRYING TO MAINTAIN SAID PRECIPITATION OF THE ROSIN SOZE FOR SIZING THE FIBERS.
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |