John Lin

US Patent:

53743369, Dec 20, 1994

Filed:

Aug 3, 1993

Appl. No.:

8/101139

Inventors:

John T. Lin - Jacksonville FL
Wen P. Liao - Warminster PA
Fu Chen - Newtown PA

Assignee:

Betz Laboratories, Inc. - Trevose PA

International Classification:

D21H 2110
C02F 156
C08F26510

US Classification:

1621683

Abstract:

A water soluble graft copolymer useful as retention and drainage aids in papermaking processes having the structure: ##STR1## wherein E is the repeat unit obtained after polymerization of an. alpha. ,. beta. ethylenically unsaturated compound, the molar percentage of a:b is from about 95:5 to 5:95, with the proviso that the sum of a and b equals 100%; G comprises the structure: ##STR2## wherein d is a cationic monomer, R. sub. 1, R. sub. 2 and R. sub. 3 are the same or different and are hydrogen or a lower alkyl group having C. sub. 1 to C. sub. 3, F is the salt of an ammonium cation and the molar percentage of c:d is from 95:5 to 5:95 with the proviso that the sum of c and d equals 100%.

US Patent:

53145810, May 24, 1994

Filed:

Dec 10, 1991

Appl. No.:

7/805266

Inventors:

John T. Lin - Jacksonville FL
Michael A. Schuster - Jacksonville FL
Richard A. Hobirk - Jacksonville FL
Alan J. Schellhamer - Jacksonville FL

Assignee:

Betz PaperChem, Inc. - Jacksonville FL

International Classification:

D21C 700
G01N 1100

US Classification:

162263

Abstract:

An apparatus and method to simultaneously evaluate the drainage, retention and formation characteristics of paper pulp comprising mixing the paper pulp furnish in the top chamber of the apparatus, releasing the furnish into a middle chamber via a valve having a cone shaped structure for even distribution of the furnish onto a wire screen, and utilizing a time delay before opening a vent valve in order to attenuate impingement forces. The apparatus utilizes a rotating blade under the wire screen to duplicate the pulsation forces of full scale papermaking equipment, an externally applied means to assist in the removal of water similar to a paper machine couch roll. Data generated during the foregoing steps is fed into a computer to evaluate the entire free water drainage process of the furnish. The device is able to set parameters to simulate the water removal process on most paper machines via level control and duration of pertinent variables.

US Patent:

20230010008, Jan 12, 2023

Filed:

Jul 12, 2022

Appl. No.:

17/863252

Inventors:

Michelle Lynn Freeman - Jacksonville FL, US
Kevin Thomas Riutort - Ponte Vedra Beach FL, US
Klaus Dieter Torp - Atlantic Beach FL, US
John C. Lin - Seaford VA, US
Benjamin John Nickless - Newport News VA, US
Michael Andrew Park - Norfolk VA, US
Kingsley Chauncy Wu - Yorktown VA, US

International Classification:

A61M 16/06
A61M 16/10
A61M 16/08

Abstract:

A gas delivery system, for providing gas to a wearer, includes a first body having a first cavity. The first body is supportable to a side of a nose and mouth of the wearer. A first adapter receives gas from a gas supply and provide the gas to the first cavity. A plurality of first openings in the first body to create a bolus of gas about the nostrils of the nose and the mouth. The first body, and a second similar body may be supported by an adjustable bridge on opposite sides of the nose and mouth of the wearer.