US3962241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive polymeric compounds
Assignee: US Philips Corp
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Filing: 1974-07-22
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Granted: 1976-06-08
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Expires: 1994-07-22
Abstract
Abstract Light sensitive cyanuric azide polycondensates which are capable of becoming insoluble in selected solvents upon exposure to light and which are useful in the preparation of photo-mechanical resist compositions.
Inventors
- 👤 Donald Noel Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:36
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/0622; C08G73/0638; C08G73/0644; C08G65/00; C08G65/34; C08G65/38; C08G65/40; C08G65/4006; C08G65/4012; C08G65/4031; C08G65/4037; G; G03; G03F; G03F7/00; G03F7/004; G03F7/008; G03F7/012
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
111 words
A light-sensitive polymeric compound of the formula I ##EQU4## in which formula n is a whole number from 2 to 120 and R represents phenylene - 1,3 phenylene - 1,4 1- phenylcarbonyl-phenylene - 2,4 1- phenylcarbonyl-phenylene - 2,6 2,2' - diphenylcarbonyl 2,3' - diphenylcarbonyl or an 1 - alkylcarbonyl-phenylene - 2,5 1 - alkylcarbonyl-phenylene - 2,4 1 - alkylcarbonyl-phenylene - 2,6 in which the alkyl group contains from 1 to 4 carbon atoms, a naphthylene - 2,7 naphthylene - 2,6 or naphthylene - 2,4 - group wherein the phenyl groups, if desired, are substituted with one or two alkyl groups containing from 1 to 4 carbon atoms or a phenyl group.
Claim 2
Dependent Claim
111 words
A light-sensitive polymeric compound of the formula I ##EQU4## in which formula n is a whole number from 2 to 120 and R represents phenylene - 1,3 phenylene - 1,4 1- phenylcarbonyl-phenylene - 2,4 1- phenylcarbonyl-phenylene - 2,6 2,2' - diphenylcarbonyl 2,3' - diphenylcarbonyl or an 1 - alkylcarbonyl-phenylene - 2,5 1 - alkylcarbonyl-phenylene - 2,4 1 - alkylcarbonyl-phenylene - 2,6 in which the alkyl group contains from 1 to 4 carbon atoms, a naphthylene - 2,7 naphthylene - 2,6 or naphthylene - 2,4 - group wherein the phenyl groups, if desired, are substituted with one or two alkyl groups containing from 1 to 4 carbon atoms or a phenyl group.
Claim 3
Dependent Claim
17 words
A light-sensitive compound according to claim 1 in which R represents a 2,2' - diphenyl carbonyl group.
Claim 4
Dependent Claim
16 words
A light-sensitive compound according to claim 1 in which R represents a naphthylene - 2,7 group.
Claim 5
Dependent Claim
17 words
A light-sensitive compound according to claim 1 in which R represents a 1-benzoyl phenylene - 2,4 group.
Claim 6
Dependent Claim
17 words
A light-sensitive compound according to claim 1 in which R represents a 1-acetyl phenylene - 2,4 group.
Claim 7
Dependent Claim
15 words
A light-sensitive compound according to claim 1 in which R represents a phenylene - 1,3.
References Cited (Backward Citations)
US3255191A
Cited
US3847915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |