Patent US4979727A successfully refreshed from Google Patents.
Patent US5732477A successfully refreshed from Google Patents.
US5732477A
Expired / Lapsed
US
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Process for ultraviolet curing
Assignee: Individual
•
Filing: 1996-09-12
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Granted: 1998-03-31
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Expires: 2016-09-12
Abstract
Abstract The disclosed invention is an ultraviolet curing process that causes a wrinkle pattern to appear on the surface of a curing layer. Initially, the primary stage of the process is generated by irradiating a photopolymerizable layer with far ultraviolet light wherein the dominant wavelength emitted is 254 nanometers. Then, the second stage of the process is performed by heating the photopolymerizable layer. Finally, the third stage of the process irradiates the layer with high pressure vapor ultraviolet light.
Inventors
- 👤 Hideo Toyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:13
CPC Classifications
F; F26; F26B; F26B3/00; F26B3/28; B; B29; B29C; B29C35/00; B29C35/02; B29C35/08; B29C37/00; B29C37/0053; B29C35/0805; B29C2035/0827; B29C2791/00; B29C2791/001
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
69 words
A process for ultraviolet curing in order to cure a photopolymerizable composition comprising: (1) The primary stage of the process; A layer of a photopolymerizable composition is irradiated with far ultraviolet light which the dominant wavelength emitted is 254 nanometers (nm) (2) The secondary stage of the process; The layer is heated (3) The third stage of the process; The layer is irradiated with high pressure vapour ultraviolet light.
Claim 2
Dependent Claim
69 words
A process for ultraviolet curing in order to cure a photopolymerizable composition comprising: (1) The primary stage of the process; A layer of a photopolymerizable composition is irradiated with far ultraviolet light which the dominant wavelength emitted is 254 nanometers (nm) (2) The secondary stage of the process; The layer is heated (3) The third stage of the process; The layer is irradiated with high pressure vapour ultraviolet light.
Claim 3
Dependent Claim
30 words
A process for ultraviolet curing in order to cure a photopolymerizable composition according to claim 1, wherein the high pressure vapour ultraviolet light is emitted with a metal halide lamp.
Claim 4
Dependent Claim
27 words
A process for ultraviolet curing in order to cure a photopolymerizable composition according to claim 1, wherein the layer is heated by a far infrared rays lamp.
Claim 5
Dependent Claim
31 words
A process for ultraviolet curing in order to cure a photopolymerizable composition according to claim 1, wherein a photoinitiator of the photopolymerizable composition has a max.UV absorption, more than 300 nm.
References Cited (Backward Citations)
US1646010A
Cited
US3894343A
Cited
US4143468A
Cited
US4299362A
Cited
SU970051A1
Cited
US4697355A
Cited
US4665627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-03-30 | 2001-09-29 | 2002-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-30 | 2005-09-29 | 2006-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-30 | 2009-09-29 | 2010-03-31 | $7700.00 | Window Closed / Lapsed |