Daniel S Chung

US Patent:

6846570, Jan 25, 2005

Filed:

Aug 16, 2001

Appl. No.:

10/048782

Inventors:

Lawrence D. Leech - West Chester PA, US
Daniel C. Chung - Princeton NJ, US
Michael W. Miller - Exton PA, US

Assignee:

Whitford Corporation - West Chester PA

International Classification:

C08L 7700
C08L 7908
B32B 2734
B32B 2708

US Classification:

4284735, 4284744, 4284758, 4284763, 524413, 524430, 524444, 524514, 525178, 525179, 525180

Abstract:

Multiple coat non-stick coating systems, as well as articles coated with such non-stick coating systems, are provided. The primer () of the multiple coat system includes a fluoropolymer () copolymer, such as a fluoropolymer terpolymer including tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride monomers, which fluoropolymer copolymers are referred to collectively as THV. The multiple coat system exhibits excellent substrate adhesion and release properties, and the primer exhibits excellent primer-substrate adhesion and primer-topcoat adhesion. The multiple coat system is additionally resistant to separation failure at the interface between the binder () and fluoropolymer components of the primer, exhibits excellent adhesion to smooth substrates (), and may also include a high level of fillers to provide increased damage resistance without compromising the above benefits.

US Patent:

7026036, Apr 11, 2006

Filed:

Aug 16, 2001

Appl. No.:

10/048666

Inventors:

Lawrence D. Leech - West Chester PA, US
Daniel C. Chung - Princeton NJ, US
Michael W. Miller - Exton PA, US

Assignee:

Whitford Corporation - West Chester PA

International Classification:

B32B 27/20
B32B 27/30
B32B 27/34
C08K 3/22
C08L 77/00

US Classification:

428142, 4284111, 428421, 428422, 428457, 4284735, 4284744, 524430, 525178, 525179

Abstract:

Single coat coating systems (), as well as articles coated with such non-stick coating systems, are provided. The single coat system includes a fluoropolymer copolymer (), such as fluoropolymer terpolymer including tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride monomers, with fluoropolymer copolymers are referred to collectively as THV. The single coat system exhibits excellent substrates adhesion and release properties, is resistant to separation failure at the interface between the binder () and fluoropolymer components (), and exhibits adhesion to smooth substrates (). The single coat system may also include a high level of fillers to provide increased damage resistance without compromising the above benefits.

US Patent:

20100133287, Jun 3, 2010

Filed:

Dec 2, 2008

Appl. No.:

12/326305

Inventors:

Paul Francis Tramontina - Harleysville PA, US
Victoria Elizabeth Encisco - Marietta GA, US
Frances Luella Walsh - Atlanta GA, US
David Aaron Lilley - Duluth GA, US
Andrew Joseph Beltz - Neenah WI, US
Bradley Michael Reynolds - Roswell GA, US
Steven Abueva - Chicago IL, US
Michael Antonio Blanchet-Ruth - Chicago IL, US
Daniel Young-Doo Chung - Chicago IL, US
Randall W. LeCates - Monroeville NJ, US

International Classification:

A47K 10/24

US Classification:

221 45

Abstract:

An ergonomic wiper dispensing system includes a containing portion adapted for containing a roll of wiper material, and an ergonomically designed dispensing portion attached to the containing portion. The ergonomically designed dispensing portion includes a visual cue to direct the user's attention thereto, and a gripping device to assist the user in grasping and holding. The ergonomically designed dispensing portion further includes a uniquely designed dispensing port for dispensing individual wipers from the roll of wiper material.

US Patent:

20110095673, Apr 28, 2011

Filed:

Jun 24, 2009

Appl. No.:

12/996497

Inventors:

Daniel C. Chung - Princeton NJ, US
Michael J. Lindstrom - Downingtown PA, US
Leonard W. Harvey - Downingtown PA, US

Assignee:

WHITFORD CORPORATION - Elverson PA

International Classification:

H01J 1/62
B05D 5/12

US Classification:

313483, 427106

Abstract:

A shatter containment coating composition for glass substrates, such as the glass tubing of compact fluorescent light bulbs If the light bulb breaks or shatters, the coating aids in containing shattered glass fragments of the light bulb, as well as gases and other elements within the light bulb, to thereby aid in disposal of the light bulb and/or to prevent the escape of gases or other elements into the environment The coating may be provided in the form of an aqueous dispersion having a relatively low viscosity such that, when coated onto a glass surface having complex geometry, such as the tubing of a compact fluorescent light bulb for example, the coating can conform to the surfaces having the complex geometry The coating may be a modified polyolefin provided in one or more layers, including a base coat, and the coating may be cured to form a film at a temperature of less than 150 C.

US Patent:

20110287251, Nov 24, 2011

Filed:

Feb 10, 2010

Appl. No.:

13/146352

Inventors:

Lawrence D. Leech - West Chester PA, US
Daniel C. Chung - Princeton NJ, US

Assignee:

WHITFORD CORPORATION - Elverson PA

International Classification:

B32B 5/16
C08K 3/36

US Classification:

428327, 524493

Abstract:

A fluoropolymer coating that includes nanoparticles for providing the coating with improved release characteristics together with improved abrasion resistance. In one embodiment, the nanoparticles are silica particles that may be incorporated into the coating by adding colloidal silica to the liquid coating formulation that is applied to a substrate, typically over a primer, and then cured. After the coating is cured, the coating demonstrates enhanced release characteristics together with improved abrasion resistance. It has been unexpectedly observed that a combination of desired release characteristics and improved abrasion resistance is found when the average particle size of the nanoparticles is between 30 and 120 nm, with the abrasion resistance generally increasing with increasing particle size.

US Patent:

20120107602, May 3, 2012

Filed:

Oct 24, 2011

Appl. No.:

13/279464

Inventors:

Daniel C. Chung - Princeton NJ, US

Assignee:

WHITFORD CORPORATION - Elverson PA

International Classification:

B32B 27/20
B32B 27/14
C08J 9/06
B32B 5/22

US Classification:

4283126, 4283179, 4283128, 264 53

Abstract:

A method of treating an article made of a fluoropolymer such as PTFE and, in particular, expanded PTFE (ePTFE), to provide a hydrophilic surface characteristic to the article. A filler is dispersed in a solvent and combined with PTFE to form a paste, which is extruded to form a shaped article and then expanded to form a porous ePTFE article, such as a tubular filter, for example, that includes filler particles dispersed and embedded within the bulk ePTFE. Functional groups of at least some of the filler particles are exposed at the surfaces or within the pores of the ePTFE article, which serve as reaction sites for a hydrophilic treatment by which hydrophilic molecules are chemically bound to the filler particles to thereby provide the surface and/or pores of the ePTFE article with a hydrophilic characteristic.

US Patent:

20120244127, Sep 27, 2012

Filed:

Sep 30, 2010

Appl. No.:

13/499212

Inventors:

Joshua H. Lipschutz - Bala Cynwyd PA, US
Jean Bennett - Bryn Mawr PA, US
Daniel C. Chung - West Chester PA, US

Assignee:

The Trustees of the University of Pennsylvania - Philadelphia PA

International Classification:

A61K 35/76
C12N 5/10
A61P 13/12
C12N 15/864

US Classification:

424 936, 435456, 435325

Abstract:

A method for enhancing repair of damaged mammalian tubular epithelial cells involves delivering to the tubular epithelial cells of a subject in need thereof a composition comprising an adeno-associated virus (AAV) comprising an AAV capsid having an amino acid sequence of a selected AAV serotype, and a minigene having AAV inverted terminal repeats and a Sec10 gene operatively linked to regulatory sequences that direct expression of Sec10 in the epithelial cells. In one embodiment, delivery is accomplished by retrograde intrauretal injection. In an embodiment the AAV vector includes a capsid of AAV serotype 2/8. Therapeutic compositions containing such AAV are provided.

US Patent:

43316190, May 25, 1982

Filed:

Dec 8, 1980

Appl. No.:

6/213716

Inventors:

Daniel C. Chung - Middlesex NJ
William A. Miller - Bridgewater NJ
Eugene R. Baumgaertner - Florham Park NJ

Assignee:

Allied Corporation - Morris Township, Morris County NJ

International Classification:

B29C 2303

US Classification:

264 13

Abstract:

A foam composition comprising an ethylene-chlorotrifluoroethylene copolymer, a blowing agent and a nucleating agent. The nucleating agent is the carbonate or oxide of a metal cation from the group of metals consisting of magnesium, calcium, barium, zinc and lead. The invention also is a method of making the above foam copolymer composition.