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Jon David Hartzler
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Wilmington, DE, US
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Patents Grants
last 30 patents
Information
Patent Grant
Polymers and fibers formed therefrom
Patent number
7,528,217
Issue date
May 5, 2009
E. I. Du Pont de Nemours and Company
Kiu-Seung Lee
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Electrically-conductive para-aramid pulp
Patent number
6,436,236
Issue date
Aug 20, 2002
E. I. Du Pont de Nemours and Company
Jon David Hartzler
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Producing para-aramid pulp by means of gravity-induced shear forces
Patent number
5,106,560
Issue date
Apr 21, 1992
E. I. Du Pont de Nemours and Company
Joseph J. Duffy
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Process for preparing poly (paraphenylene terephthalamide) fibers d...
Patent number
4,985,046
Issue date
Jan 15, 1991
E. I. Du Pont de Nemours and Company
Jon D. Hartzler
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Polyhydrazide spinning solutions
Patent number
4,039,502
Issue date
Aug 2, 1977
E. I. Du Pont de Nemours and Company
John David Hartzler
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Aqueous organic base solution of polyhydrazides
Patent number
3,966,656
Issue date
Jun 29, 1976
E. I. Du Pont de Nemours and Company
Jon David Hartzler
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
Information
Patent Application
Polymers and fibers formed therefrom
Publication number
20080085992
Publication date
Apr 10, 2008
Kiu-Seung Lee
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Polyoxadiazole composite fibers
Publication number
20080014440
Publication date
Jan 17, 2008
Kiu-Seung Lee
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Application
Continuous processes for making composite fibers
Publication number
20060113700
Publication date
Jun 1, 2006
Jon David Hartzler
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING