IP Library › Granted Patent US 9,045,494
Granted Patent B2
US 9,045,494 · App. 14/303,285 · Granted Jun 2, 2015

Orthoester compound

Inventor: Antoni Kozlowski (Huntsville, AL)
Assignee: NEKTAR THERAPEUTICS
C07D493/08A61K9/1611A61K9/1617A61K9/1623A61K9/1635A61K9/1652A61K9/209A61K31/74C08G65/002C08G65/331C08G65/332C08G2650/42C08L2203/02C08G65/33317
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Quick Facts
Patent No.
US 9,045,494
App. No.
14/303,285
Granted
Jun 2, 2015
Kind
B2
Abstract

A compound is provided that is useful for, among other things, preparing water-soluble polymer derivatives bearing a terminal N-succinimidyl ester.

Claims (1)

1. A compound having the following structure:

Assignments (4)
RELEASE OF SECURITY INTEREST Recorded Apr 17, 2020
From: TC LENDING, LLC, AS COLLATERAL AGENT
To: NEKTAR THERAPEUTICS
Reel/Frame 053180/0009 →
RELEASE OF SECURITY INTEREST RECORDED AT REEL 33760, FRAME 0791 Recorded Oct 14, 2015
From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
To: NEKTAR THERAPEUTICS
Reel/Frame 036865/0265 →
GRANT OF SECURITY INTEREST IN UNITED STATES PATENTS Recorded Oct 6, 2015
From: NEKTAR THERAPEUTICS
To: TC LENDING, LLC, AS COLLATERAL AGENT
Reel/Frame 036796/0562 →
SECURITY INTEREST Recorded Sep 17, 2014
From: NEKTAR THERAPEUTICS
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 033760/0791 →
Continuity (6)
Continuation 13856704 · Apr 4, 2013
Continuation 13453769 · Apr 23, 2012
Continuation 12496294 · Jul 1, 2009
Continuation 10659735 · Sep 9, 2003
Provisional Application 60409348 · Sep 9, 2002
Related Publication 20140296541A1 · Oct 2, 2014