US3881940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for treating wood
Assignee: Reichhold Chemicals Inc
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Filing: 1973-07-12
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Granted: 1975-05-06
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Expires: 1993-07-12
Abstract
Abstract This invention is directed to a method for producing and preserving very light colored wooden objects such as utility poles, fence posts and piling timbers. These wooden objects are treated under heat and pressure with a composition comprising a blend of (I) a blend of (A) from about 1% to about 50% by weight of pentachlorophenol and (B) from about 99% to about 50% by weight of a petroleum oil and (II) from about 0.005% to about 100% by weight based upon the total weight of (I) of a compound containing a heavy metal oxide. Wood treating compositions of this invention are stable against discoloration and formation of sludge during storage and during the wood treating process.
Inventors
- 👤 Joseph Amundsen
- 👤 William H Wetzel
- 👤 Norman Naimy
- 👤 Robert J Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:05
CPC Classifications
A; A01; A01N; A01N31/00; A01N31/08; A01N31/10; B; B27; B27K; B27K3/00; B27K3/16; B27K3/34; B27K3/38; B27K3/40; B27K3/44; B27K3/48; B27K3/52
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
96 words
THE WOOD PRESERVATIVE COMPOSITION USEFUL IN PRESSURE VACUUM TECHNIQUES FOR TREATING HEAVY TIMBERS CONSISTING ESSENTIALLY OF A BLEND OF (1) A BLEND OF (A) FROM ABOUT 1% TO ABOUT 50% BY WEIGHT OF PENTACHLOROPHENOL AND (B) FROM ABOUT 99% TO 50% BY WEIGHT OF A PETROLEUM HYDROCARBON OIL AND (II) FROM ABOUT 0.005% TO ABOUT 100% BY WEIGHT, BASED UPON THE TOTAL WEIGHT OF (A) AND (B), OF A MEMBER OF A GROUP CONSISTING OF THE METALS TITANIUM, LED, TUNGSTEN, IRON, CHROMIUM, TIN, SILVER AND COBALT AND THE OXIDES THEREOF ADDED TO PREVENT ACCUMULATION OF SLUDGE.
Claim 2
Dependent Claim
96 words
THE WOOD PRESERVATIVE COMPOSITION USEFUL IN PRESSURE VACUUM TECHNIQUES FOR TREATING HEAVY TIMBERS CONSISTING ESSENTIALLY OF A BLEND OF (1) A BLEND OF (A) FROM ABOUT 1% TO ABOUT 50% BY WEIGHT OF PENTACHLOROPHENOL AND (B) FROM ABOUT 99% TO 50% BY WEIGHT OF A PETROLEUM HYDROCARBON OIL AND (II) FROM ABOUT 0.005% TO ABOUT 100% BY WEIGHT, BASED UPON THE TOTAL WEIGHT OF (A) AND (B), OF A MEMBER OF A GROUP CONSISTING OF THE METALS TITANIUM, LED, TUNGSTEN, IRON, CHROMIUM, TIN, SILVER AND COBALT AND THE OXIDES THEREOF ADDED TO PREVENT ACCUMULATION OF SLUDGE.
Claim 3
Dependent Claim
30 words
The wood preservative as defined in claim 1 wherein (II) is at least one metal selected from a group consisting of titanium, lead tungsten, iron, chromium, tin, silver and cobalt.
Claim 4
Dependent Claim
39 words
The wood preservative compound as set forth in claim 1 wherein (II) is at least one member of the group consisting of titanium oxide, lead oxide, tungsten oxide, iron oxide, chromium oxide, tin oxide, silver oxide and cobalt oxide.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |