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US3094459A
Expired / Lapsed
US
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Wood preservative
Assignee: Individual
•
Filing: 1960-03-01
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Granted: 1963-06-18
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Expires: 1980-03-01
Abstract
No abstract record available.
Inventors
- 👤 James H Pickren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:03
CPC Classifications
A; A01; A01N; A01N59/00; A01N59/16; A01N59/20; B; B27; B27K; B27K3/00; B27K3/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN A METHOD OF PRESERVING WOOD IN A FERROUS METAL CONTAINER WHICH IS SUBJECT TO CORROSIVE ATTACK BY COPPER SULFATE AND ALKALI METAL DISCHROMATE WOOD PRESERVING CHEMICALS, THE NOVEL METHOD OF PRESERVING SUCH WOOD NOTWITHSTANTING THE PRESENCE OF SUCH OCCORSIVE CHEMICALS, WHICH METHOD COMPRISES ADDING CITRIC ACID TO SAID CHEMICALS IN AN AMOUNT TO REDUCE THE PH, THEN ADDING AMMONIA IN AN AMOUNT TO RAISE THE PH TO ABOUT 4.0 TO ABOUT 4.8, AND THEN IMMERSING SAID WOOD IN HE RESULTING SOLUTION WHILE MAINTAINIG SAID SOLUTION IN SAID FERROUS METAL CONTAINER.
Claim 2
Dependent Claim
91 words
IN A METHOD OF PRESERVING WOOD IN A FERROUS METAL CONTAINER WHICH IS SUBJECT TO CORROSIVE ATTACK BY COPPER SULFATE AND ALKALI METAL DISCHROMATE WOOD PRESERVING CHEMICALS, THE NOVEL METHOD OF PRESERVING SUCH WOOD NOTWITHSTANTING THE PRESENCE OF SUCH OCCORSIVE CHEMICALS, WHICH METHOD COMPRISES ADDING CITRIC ACID TO SAID CHEMICALS IN AN AMOUNT TO REDUCE THE PH, THEN ADDING AMMONIA IN AN AMOUNT TO RAISE THE PH TO ABOUT 4.0 TO ABOUT 4.8, AND THEN IMMERSING SAID WOOD IN HE RESULTING SOLUTION WHILE MAINTAINIG SAID SOLUTION IN SAID FERROUS METAL CONTAINER.
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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |