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US4168265A
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Alkyl substituted cyclams
Assignee: Individual
•
Filing: 1978-02-03
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Granted: 1979-09-18
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Expires: 1998-02-03
Abstract
Abstract Alkyl cyclam resulting from substitution of one or more hydrogens of the cyclam represented by the formula ##STR1## by alkyl groups containing at least 8 carbon atoms. The alkyl cyclam can be used for capturing metal ions.
Inventors
- 👤 Iwao Tabushi
- 👤 Mariko Fujiyoshi
- 👤 Hidefumi Kato
- 👤 Yasuhisa Kuroda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:10
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/147; C07D; C07D257/00; C07D257/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
41 words
An alkyl cyclam of the formula ##STR12## wherein R is an alkyl group having from 8 to 20 carbon atoms and n is 1 or 2, said alkyl cyclam being selected from the group consisting of the following alkyl cyclams: ##STR13##
Claim 2
Dependent Claim
41 words
An alkyl cyclam of the formula ##STR12## wherein R is an alkyl group having from 8 to 20 carbon atoms and n is 1 or 2, said alkyl cyclam being selected from the group consisting of the following alkyl cyclams: ##STR13##
Claim 3
Dependent Claim
10 words
The alkyl cyclam of claim 1 of the formula ##STR14##
Claim 4
Dependent Claim
10 words
The alkyl cyclam of claim 1 of the formula ##STR15##
Claim 5
Dependent Claim
10 words
The alkyl cyclam of claim 1 of the formula ##STR16##
Claim 6
Dependent Claim
15 words
The alkyl cyclam of claim 1, wherein the compound is represented by the formula ##STR17##
Claim 7
Dependent Claim
15 words
The alkyl cyclam of claim 1, wherein the compound is represented by the formula ##STR18##
Claim 8
Dependent Claim
15 words
The alkyl cyclam of claim 1, wherein the compound is represented by the formula ##STR19##
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) | 1982-09-17 | 1983-03-19 | 1983-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-17 | 1987-03-19 | 1987-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-17 | 1991-03-19 | 1991-09-18 | $7700.00 | Window Closed / Lapsed |