US2742368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized and rust inhibited polymeric organosilicon compositions
Assignee: Dow Silicones Corp
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Filing: 1951-08-02
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Granted: 1956-04-17
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Expires: 1971-08-02
Abstract
No abstract record available.
Inventors
- 👤 William T Rossiter
- 👤 Chester C Currie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:21
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; C08K5/57
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
129 words
THE METHOD OF STABILIZING AND RENDERING RUST INHIBITING A LIQUID ORGANOPOLYSILOXANE HAVING A RATIO OF FROM 1.9 TO 3 INCLUSIVE ORGANIC GROUPS ATTACHED TO SILICON PER SILICON ATOM, SAID ORGANIC GROUPS BEING SELECTED FROM THE GROUP CONSISTING OF METHYL AND PHENYL RADICALS, WHICH COMPRISES INCORPORATING THEREIN FROM 0.01 TO 1.0 PER CENT BY WEIGHT, BASED ON THE WEIGHT OF THE ORGANOPOLYSILOXANE, OF A TIN COMPOUND SELECTED FROM THE GROUP CONSISTING OF (1) COMPOUNDS OF THE GENERAL FORMULA R2SNZ2, WHERE R REPRESENTS AN ALKYL RADICAL OF FROM 2 TO 12 INCLUSIVE CARBON ATOMS AND Z REPRESENTS AN ALIPHATIC ACYLOXY RADICAL OF FROM 2 TO 12 INCLUSIVE CARBON ATOMS, (2) STANNOUS SALTS OF ALIPHATIC MONOCARBOXYLIC ACIDS OF FROM 4 TO 12 INCLUSIVE CARBON ATOMS, (3) TETRABUTYL TIN, AND (4) TETRAPHENYL TIN.
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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) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |