US2565175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of wood preservatives
Assignee: Individual
•
Filing: 1947-06-06
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Granted: 1951-08-21
•
Expires: 1967-06-06
Abstract
No abstract record available.
Inventors
- 👤 Hager Bror Olof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:12
CPC Classifications
B; B27; B27K; B27K3/00; B27K3/16; B27K3/32; B27K3/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
METHOD OF PRODUCING A PRESERVATIVE FOR THE TREATMENT OF WOOD AND OTHER ORGANIC MATERIALS SUBJECTING TO ATTACK BY WOOD-DESTROYING FUNGI, TERMITES, OTHER INSECTS AND MARINE BORES, WHICH COMPRISES BRINGING TOGETHER IN AN AQUEOUS SYSTEM A HEXAVALENT CHROMIUM COMPOUND OF AT LEAST ONE METAL OF THE GROUP CONSISTING OF CALCIUM, STRONTIUM AND BARIUM, A EPNTAVLENT ARSENIC COMPOUND AND AT LEAST ONE COMPOUND OF THE GROUP OF SALTS CONSISTING OF SULPHATES AND CARBONATES OF A METAL SELECTED FROM THE GROUP CONSISTING OF ZINC, COPPER, ALUMINUM, MAGNESIUM, CADMIUM, MANGANESE, IRON, MERCURY, CHROMIUM AND NICKEL, ADDING THE COMPOUNDS IN SUCH PROPORTIONS AS TO HOLD THE RESULTING DIFFICULTY SOLUBLE ARSENATES OF THE LAST MENTIONED METALS IN SOLUTION BUT TO PRECIPITATE THE RESULTING MORE DIFFICULTY SOLUBLE SALTS OF THE GROUP CONSISTING OF SULPHATE AND CARBONATE OF THE METALS OF THE GROUP CONSISTING OF CALCIUM, BARIUM AND STRONTIUM, AND REMOVING SAID PRECIPITATE.
Claim 2
Dependent Claim
145 words
METHOD OF PRODUCING A PRESERVATIVE FOR THE TREATMENT OF WOOD AND OTHER ORGANIC MATERIALS SUBJECTING TO ATTACK BY WOOD-DESTROYING FUNGI, TERMITES, OTHER INSECTS AND MARINE BORES, WHICH COMPRISES BRINGING TOGETHER IN AN AQUEOUS SYSTEM A HEXAVALENT CHROMIUM COMPOUND OF AT LEAST ONE METAL OF THE GROUP CONSISTING OF CALCIUM, STRONTIUM AND BARIUM, A EPNTAVLENT ARSENIC COMPOUND AND AT LEAST ONE COMPOUND OF THE GROUP OF SALTS CONSISTING OF SULPHATES AND CARBONATES OF A METAL SELECTED FROM THE GROUP CONSISTING OF ZINC, COPPER, ALUMINUM, MAGNESIUM, CADMIUM, MANGANESE, IRON, MERCURY, CHROMIUM AND NICKEL, ADDING THE COMPOUNDS IN SUCH PROPORTIONS AS TO HOLD THE RESULTING DIFFICULTY SOLUBLE ARSENATES OF THE LAST MENTIONED METALS IN SOLUTION BUT TO PRECIPITATE THE RESULTING MORE DIFFICULTY SOLUBLE SALTS OF THE GROUP CONSISTING OF SULPHATE AND CARBONATE OF THE METALS OF THE GROUP CONSISTING OF CALCIUM, BARIUM AND STRONTIUM, AND REMOVING SAID PRECIPITATE.
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) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |