Patent US2605274A successfully refreshed from Google Patents.
US2605274A
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Organo-polysiloxanes and methods
Assignee: —
•
Filing: —
•
Granted: 1952-07-29
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Expires: 1969-07-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:17
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/32; C08G77/34; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/081; C08G77/06; C08G77/48; C08G77/50; C08L; C08L83/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
48 words
THE METHOD WHICH COMPRISES CONTACTING IN LIQUID PHASE AND ORGANO-SILICON COMPOUND OF THE GENERAL FORMULA RO(CH3)2SIO)NR, IN WHICH N HAS A VALUE OF FROM 1 TO 11 INCLUSIVE AND R REPRESENTS AN ALKYL RADICAL OF LESS THAN 5 CARBON ATOMS, WITH A SILANE DIOL OF THE GENERAL FORMULA
Claim 2
Independent Claim
48 words
THE METHOD WHICH COMPRISES CONTACTING IN LIQUID PHASE AND ORGANO-SILICON COMPOUND OF THE GENERAL FORMULA RO(CH3)2SIO)NR, IN WHICH N HAS A VALUE OF FROM 1 TO 11 INCLUSIVE AND R REPRESENTS AN ALKYL RADICAL OF LESS THAN 5 CARBON ATOMS, WITH A SILANE DIOL OF THE GENERAL FORMULA
Claim 3
Dependent Claim
9 words
A COMPOSITION OF MATTER CONSISTING OF 1,1,5,5TETRAMETHYL-3,3,7,7 - TETRA-T-BUTYLCYCLOITETRASILOXANE.
Claim 4
Dependent Claim
9 words
A COMPOSITION OF MATTER CONSISTING OF 1,1,5,5TETRAMETHYL-3,3,7,7 - TETRA-T-BUTYLCYCLOITETRASILOXANE.
References Cited (Backward Citations)
US2449940A
Cited
US2443353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |