Patent US2507316A successfully refreshed from Google Patents.
US2507316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear chloromethylmethylsiloxanes
Assignee: Dow Silicones Corp
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Filing: 1948-07-19
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Granted: 1950-05-09
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Expires: 1968-07-19
Abstract
No abstract record available.
Inventors
- 👤 Mcgregor Rob Roy
- 👤 Warrick Earl Leathen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:47
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/22; C08G77/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
COMPOUNDS IN ACCORDANCE WITH THE GENERAL FORMULA R(CH3) 2SIO(SIR''CH30)XSI(CH3)2R IN WHICH X HAS A POSITIVE VALURE, R IS SELECTED FROM THE GROUP CONSISTING OF METHYL AND CHLOROMETHYL RADICALS IN WHICH CCOMPOUNDS BOTH R''S ARE ALIKE IN ANY ONE MOLECULE AND R'' IS SELECTED FROM THE GROUP CONSISTING OF METHYL AND CHLOROMETHYL RADICALS, THERE BEING AT LEAST ONE CHLOROMETHYL RADICAL IN EACH MOLECULE.
Claim 2
Dependent Claim
62 words
COMPOUNDS IN ACCORDANCE WITH THE GENERAL FORMULA R(CH3) 2SIO(SIR''CH30)XSI(CH3)2R IN WHICH X HAS A POSITIVE VALURE, R IS SELECTED FROM THE GROUP CONSISTING OF METHYL AND CHLOROMETHYL RADICALS IN WHICH CCOMPOUNDS BOTH R''S ARE ALIKE IN ANY ONE MOLECULE AND R'' IS SELECTED FROM THE GROUP CONSISTING OF METHYL AND CHLOROMETHYL RADICALS, THERE BEING AT LEAST ONE CHLOROMETHYL RADICAL IN EACH MOLECULE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |