US2816057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wood preserving composition
Assignee: HICKSON S TIMBER IMPREGNATION
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Filing: 1955-07-15
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Granted: 1957-12-10
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Expires: 1975-07-15
Abstract
No abstract record available.
Inventors
- 👤 Cook Charles Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:08
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/12; A01N59/00; A01N59/16; A01N59/20; A01N59/22; B; B27; B27K; B27K3/00; B27K3/16; B27K3/20; B27K3/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A WOOD PRESERVATIVE COMPOSITION IN A POWDERED FREE FLOWING FORM ADAPTED TO BE DISSOLVED IN WATER PRIOR TO USE FOR WOOD PRESERVATION COMPRISING IN ADMIXTURE A MEMBER OF THE GROUP CONSISTING OF ALKALI METAL AND AMMONIUM ARSENATES WHICH IN 1.2% W./V. AQUEOUS SOLUTION GIVE A PH OF LESS THAN 4.6 A MEMBER OF THE GROUP CON-NSISTING OF NON-DELIQUESCENT COPPER AND ZINC SALTS, AND A MEMBER OF THE GROUP CONSISTING OF POTASSIUM DICHROMATE, AMMONIUM DICHROMATE AND ANHYDROUS SOLDIUM DICHROMATE.
Claim 2
Dependent Claim
78 words
A WOOD PRESERVATIVE COMPOSITION IN A POWDERED FREE FLOWING FORM ADAPTED TO BE DISSOLVED IN WATER PRIOR TO USE FOR WOOD PRESERVATION COMPRISING IN ADMIXTURE A MEMBER OF THE GROUP CONSISTING OF ALKALI METAL AND AMMONIUM ARSENATES WHICH IN 1.2% W./V. AQUEOUS SOLUTION GIVE A PH OF LESS THAN 4.6 A MEMBER OF THE GROUP CON-NSISTING OF NON-DELIQUESCENT COPPER AND ZINC SALTS, AND A MEMBER OF THE GROUP CONSISTING OF POTASSIUM DICHROMATE, AMMONIUM DICHROMATE AND ANHYDROUS SOLDIUM DICHROMATE.
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) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |