Patent US4766037A successfully refreshed from Google Patents.
US4766037A
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Photodegradable microcapsules
Assignee: Fujifilm Holdings Corp
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Filing: 1986-09-09
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Granted: 1988-08-23
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Expires: 2006-09-09
Abstract
Abstract A photodegradable microcapsule is described which has a wall made of a polymer coat having an acid-decomposable bond selected from a silylether bond and a silylureido bond and which contains a compound that generates an acid upon light irradiation.
Inventors
- 👤 Akio Watanabe
- 👤 Shintaro Washizu
- 👤 Fumiaki Shinozaki
- 👤 Shun-ichi Ishikawa
- 👤 Toshiaki Aoai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:59
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/002; A; A61; A61K; A61K9/00; A61K9/48; A61K9/50; A61K9/5005; A61K9/5021; A61K9/5031; B; B01; B01J; B01J19/00; B01J19/14; G03F7/004; G03F7/075; G03F7/0757; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249994; Y10T428/249995; Y10T428/249997; Y10T428/29; Y10T428/2982; Y10T428/2984; Y10T428/2985
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A photodegradable microcapsule which has a wall made of a polymer coat having an acid-decomposable silyluredo bond represented by the formula ##STR29## and which contains a compound that generates an acid upon actinic radiation.
Claim 2
Dependent Claim
34 words
A photodegradable microcapsule which has a wall made of a polymer coat having an acid-decomposable silyluredo bond represented by the formula ##STR29## and which contains a compound that generates an acid upon actinic radiation.
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) | 1991-08-23 | 1992-02-22 | 1992-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-23 | 1996-02-22 | 1996-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-23 | 2000-02-22 | 2000-08-23 | $7700.00 | Window Closed / Lapsed |