US2623892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tri-alkyl tin mono-alkoxides
Assignee: Distillers Co Yeast Ltd
•
Filing: 1951-04-19
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Granted: 1952-12-30
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Expires: 1971-04-19
Abstract
No abstract record available.
Inventors
- 👤 Cleverdon Desmond
- 👤 Staudinger Johann Josef Peter
- 👤 Faulkner Donald
- 👤 Milne John Noel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:49
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/22; C07F7/2224
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A TRI-ALKYL TIN MONO-ALKOXIDE, WHEREIN THE ALKYL RADICALS OF THE TRI-ALKYL GROUP EACH CONTAINS NOT LESS THAN 4 CARBON ATOMS AND THE ALKYL RADICAL OF THE ALKOXY GROUP CONTAI NINS FROM 1 TO 8 CARBON ATOMS.
Claim 2
Dependent Claim
36 words
A TRI-ALKYL TIN MONO-ALKOXIDE, WHEREIN THE ALKYL RADICALS OF THE TRI-ALKYL GROUP EACH CONTAINS NOT LESS THAN 4 CARBON ATOMS AND THE ALKYL RADICAL OF THE ALKOXY GROUP CONTAI NINS FROM 1 TO 8 CARBON ATOMS.
References Cited (Backward Citations)
US1489518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |