US2601237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carboxyphenylpolysiloxanes
Assignee: Dow Silicones Corp
•
Filing: 1949-07-05
•
Granted: 1952-06-24
•
Expires: 1969-07-05
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Barry
- 👤 John W Gilkey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:33
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
AN ORGANOPOLYSILOXANE HAVING A DEGREE OF SUBSTITUTION OF FROM 0.5 TO 3 ORGANIC RADICALS PERSILICON ATOM, SAID RADICALS BEING SLECTED FROM THE GROUP CONSISTING OF CARBOXYPHENYL, TOLYL, PHENYL AND METHYL RADICALS, AND IN WHICH POLYSILOXANE THERE IS FROM ONE CARBOXYPHENYL RADICAL PER 4000 SILICON ATOMS TO ONE CARBOXYPHENYL RADICAL PER SILICON ATOM.
Claim 2
Dependent Claim
52 words
AN ORGANOPOLYSILOXANE HAVING A DEGREE OF SUBSTITUTION OF FROM 0.5 TO 3 ORGANIC RADICALS PERSILICON ATOM, SAID RADICALS BEING SLECTED FROM THE GROUP CONSISTING OF CARBOXYPHENYL, TOLYL, PHENYL AND METHYL RADICALS, AND IN WHICH POLYSILOXANE THERE IS FROM ONE CARBOXYPHENYL RADICAL PER 4000 SILICON ATOMS TO ONE CARBOXYPHENYL RADICAL PER SILICON ATOM.
References Cited (Backward Citations)
US2397727A
Cited
US2507414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |