The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 10, 2001

Filed:

Mar. 19, 1999
Applicant:
Inventors:

Francis Johnson, East Setauket, NY (US);

Ramesh C. Gupta, East Setauket, NY (US);

Assignee:

Other;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
C07C / ;
Abstract

Disclosed are processes for the preparation of compounds of the formula (I): H2N—(CH2)n—A—(CH2)m—NH2, or (II): H2N—(CH2)n—NH—C(═NR1)—NH—(CH2)m—NH2, wherein n and m are each independently an integer from 2 to 8; A is selected from the group consisting of —NR1—, —NR1—(CH2)r—NR1— and —NR1—(CH2)r—NR1—(CH2)z—NR1—, wherein r and z are an integer ranging from 2 to 8; and R1 is hydrogen or a protecting group having a carbonyl group.


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Johnson, Francis. (2001). Process for the preparation of polyamines and polyamine derivatives (U.S. Patent No. 6258976). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6258976

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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