Patent US3351879A successfully refreshed from Google Patents.
Patent US3083138A successfully refreshed from Google Patents.
US3083138A
Expired / Lapsed
US
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Wood impregnating compositions and process
Assignee: Individual
•
Filing: 1961-04-18
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Granted: 1963-03-26
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Expires: 1981-04-18
Abstract
No abstract record available.
Inventors
- 👤 Schulz Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:12
CPC Classifications
A; A01; A01N; A01N59/00; A01N59/16; A01N59/22; B; B27; B27K; B27K3/00; B27K3/16; B27K3/26; B27K3/28; B27K3/30; B27K3/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A WOOD-PRESERVING COMPOSITION CONTAINING A FLUORIDE, A CHROMATE, AND AN ARSENATE IN THE PROPORTIONS OF 2/Z MOLES OF A CHROMATE, 6 M/F MOLES OF AN ALKALI FLUORIDE, N MOLES OF AN ALKALI ARSENATE, AND A(6+B-C)/D MOLES OF AN ACID WHERE Z IS THE NUMBER OF CHROMIUM ATOMS IN THE CHROMATE MOLECULE, F IS THE NUMBER OF FLUORINE ATOMS IN THE FLUORIDE MOLECULE, M+N=2, A IS ANY VALUE FROM 0.25 TO 1.2, B IS THE NUMBER OF ALKALI ATOMS IN THE CHROMATE MOLECULE, C IS THE NUMBER OF HYDROGEN ATOMS IN THE MOLECLE OF ANHYDROUS ARSENATE, AND D IS THE VALENCE OF THE ACID, THE COMPOSITION BEING SUBSTANTIALLY FREE FROM CU, ZN, CA AND MG COMPOUNDS.
Claim 2
Dependent Claim
115 words
A WOOD-PRESERVING COMPOSITION CONTAINING A FLUORIDE, A CHROMATE, AND AN ARSENATE IN THE PROPORTIONS OF 2/Z MOLES OF A CHROMATE, 6 M/F MOLES OF AN ALKALI FLUORIDE, N MOLES OF AN ALKALI ARSENATE, AND A(6+B-C)/D MOLES OF AN ACID WHERE Z IS THE NUMBER OF CHROMIUM ATOMS IN THE CHROMATE MOLECULE, F IS THE NUMBER OF FLUORINE ATOMS IN THE FLUORIDE MOLECULE, M+N=2, A IS ANY VALUE FROM 0.25 TO 1.2, B IS THE NUMBER OF ALKALI ATOMS IN THE CHROMATE MOLECULE, C IS THE NUMBER OF HYDROGEN ATOMS IN THE MOLECLE OF ANHYDROUS ARSENATE, AND D IS THE VALENCE OF THE ACID, THE COMPOSITION BEING SUBSTANTIALLY FREE FROM CU, ZN, CA AND MG COMPOUNDS.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |