US3789062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ligands which are also silver halide developing agents
Assignee: Polaroid Corp
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Filing: 1970-12-29
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Granted: 1974-01-29
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Expires: 1990-12-29
Abstract
Abstract Novel compounds or coordinating agents which can form a coordination complex with a metal and which include an ortho or para disubstituted phenyl radical. The compounds are useful as intermediates for providing colored dyes.
Inventors
- 👤 E Idelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:04
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72; C07C45/74; C07C279/00; C07C279/20; C07C279/24; C07C279/26; C07C45/62; C07C49/00; C07C49/92; C07C68/00; C07C68/02; C09; C09B; C09B43/00; C09B45/00; C09B45/02; C09B45/14; C09B45/48; G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C8/00; G03C8/02; G03C8/04; G03C8/06; G03C8/08; G03C8/10; G03C8/12; G03C8/14; G03C8/16; G03C8/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
10 words
A compound of claim 1 corresponding to the following formula:
Claim 2
Dependent Claim
8 words
A compound of claim 2 of the formula:
Claim 3
Dependent Claim
9 words
A compound of claim 1 corresponding to the formula:
Claim 4
Dependent Claim
8 words
A compound of claim 4 of the formula:
Claim 5
Dependent Claim
9 words
A compound of claim 1 corresponding to the formula:
Claim 6
Dependent Claim
9 words
A compound of claim 1 corresponding to the formula:
Claim 7
Dependent Claim
8 words
A compound of claim 7 of the formula:
Claim 8
Dependent Claim
8 words
A compound of claim 7 of the formula:
Claim 9
Dependent Claim
8 words
A compound of claim 7 of the formula:
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |