Patent US4837190A successfully refreshed from Google Patents.
US4837190A
Expired / Lapsed
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Organic solvent soluble polyvalent metal alkoxy alkoxides
Assignee: Akzo America Inc
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Filing: 1986-05-09
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Granted: 1989-06-06
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Expires: 2006-05-09
Abstract
Abstract Organic solvent soluble alkoxides of magnesium, calcium, strontium, barium, scandium, yttrium and lanthanum are prepared by the reaction of these elements with alkoxy alcohols.
Inventors
- 👤 William Summers, III
- 👤 Eric W. Burkhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:41
CPC Classifications
C; C07; C07F; C07F3/00; C07F3/02; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A composition comprising as essential ingredients: (i) a solvent; (ii) a yttrium alkoxy alkoxide; and (iii) a zirconium alkoxide.
Claim 2
Dependent Claim
19 words
A composition comprising as essential ingredients: (i) a solvent; (ii) a yttrium alkoxy alkoxide; and (iii) a zirconium alkoxide.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-05 | 1992-12-05 | 1993-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-05 | 1996-12-05 | 1997-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-05 | 2000-12-05 | 2001-06-06 | $7700.00 | Window Closed / Lapsed |