US3933885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cinnamylideneacetic acid esters
Assignee: Fujifilm Holdings Corp
•
Filing: 1974-02-12
•
Granted: 1976-01-20
•
Expires: 1994-02-12
Abstract
Abstract A monomer unit represented by general formula (I) ##SPC1## wherein R 1 is a hydrogen atom or a methyl group; R 2 is a divalent group containing 2 to 10 carbon atoms; R 3 is a hydrogen atom, a halogen atom (such as chlorine, bromine) a methoxy group, a nitro group or a methyl group; R 4 is a hydrogen atom, a cyano group or a carbamoyl group; X and Y each represents --O--, --S--, or --NR 5 --; and R 5 represents a hydrogen atom, a methyl group or an ethyl group.
Inventors
- 👤 Masato Satomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:31
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388; C; C07; C07C; C07C51/00; C07C51/58; C07C51/60; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/20; C08F8/00; C08F8/14; C08F2810/00; C08F2810/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
149 words
A monomer represented by the following formula ##EQU11## wherein R 1 represents a hydrogen atom or a methyl group; R 2 represents --CH 2 CH 2 --, --CH 2 CH 2 CH 2 --, --CH 2 CH 2 CH 2 CH 2 --, ##EQU12## --CH 2 CH 2 OCH 2 CH 2 --, ##EQU13## --CH 2 CH 2 OCH 2 CH 2 OCH 2 CH--, --CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 --, ##EQU14## --CH 2 CH 2 SCH 2 CH 2 --, --C 6 H 10 --, --C 6 H 4 --, --CH 2 C 6 H 4 CH 2 --, or --CH 2 C 6 H 10 CH 2 --; R 3 is a hydrogen atom, a halogen atom, a methoxy group, a nitro group or a methyl group; R 4 is a hydrogen atom, a cyano group or a carbamoyl group.
Claim 2
Dependent Claim
149 words
A monomer represented by the following formula ##EQU11## wherein R 1 represents a hydrogen atom or a methyl group; R 2 represents --CH 2 CH 2 --, --CH 2 CH 2 CH 2 --, --CH 2 CH 2 CH 2 CH 2 --, ##EQU12## --CH 2 CH 2 OCH 2 CH 2 --, ##EQU13## --CH 2 CH 2 OCH 2 CH 2 OCH 2 CH--, --CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 --, ##EQU14## --CH 2 CH 2 SCH 2 CH 2 --, --C 6 H 10 --, --C 6 H 4 --, --CH 2 C 6 H 4 CH 2 --, or --CH 2 C 6 H 10 CH 2 --; R 3 is a hydrogen atom, a halogen atom, a methoxy group, a nitro group or a methyl group; R 4 is a hydrogen atom, a cyano group or a carbamoyl group.
Claim 3
Dependent Claim
45 words
The monomer of claim 1, wherein R 2 is --CH 2 CH 2 --, --CH 2 CH 2 CH 2 --, --CH 2 CH 2 CH 2 CH 2 --, ##EQU15## --CH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 --, ##EQU16##
References Cited (Backward Citations)
US3817876A
Cited
US3751399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |