Michael C John

US Patent:

20050161181, Jul 28, 2005

Filed:

Jan 26, 2004

Appl. No.:

10/764935

Inventors:

Michael St. John - Chicago IL, US
Angela Zagala - Naperville IL, US

International Classification:

D21H017/06
D21H017/55

US Classification:

162158000, 162168300, 162166000

Abstract:

A method of enhancing the dewatering of a paper sheet on a paper machine comprising adding to the paper sheet about 0.05 lb/ton to about 15 lb/ton, based on dry fiber, of one or more aldehyde functionalized polymers comprising amino or amido groups wherein at least about 15 mole percent of the amino or amido groups are functionalized by reacting with one or more aldehydes and wherein the aldehyde functionalized polymers have a molecular weight of at least about 100,000.

US Patent:

20060162887, Jul 27, 2006

Filed:

Jan 26, 2005

Appl. No.:

11/043700

Inventors:

David Weinstein - Hawthorn Woods IL, US
Michael St. John - Chicago IL, US
Rodney Banks - Aurora IL, US
James Thomas - Heber Springs AR, US

International Classification:

D21F 11/00
G06F 7/66

US Classification:

162198000, 162263000, 162253000, 700128000

Abstract:

The present invention provides an automatic control system, method and paper manufacturing machine using such control system for automatically controlling the amount of press section dewatering via the metered application of chemical dewatering agents applied to a paper web in a paper manufacturing process. The control system includes a feedback controller for controlling the amount of chemical dewatering agent applied to a paper web, and a monitoring device for obtaining a measurement of the moisture of the paper web exiting the press section.

US Patent:

20060249269, Nov 9, 2006

Filed:

May 3, 2005

Appl. No.:

11/120878

Inventors:

Pious Kurian - Aurora IL, US
Peter Reed - Plainfield IL, US
Michael St. John - Chicago IL, US
Winston Su - Naperville IL, US
Jeffrey Cramm - Batavia IL, US

International Classification:

D21H 21/18
D21H 17/45
D21H 17/00

US Classification:

162168300, 162168200, 526303100, 526319000

Abstract:

A structured water soluble polymer produced by polymerization of amine-containing monomers or pre-formed polymers is described. Various structured polymers are prepared and characterized. The structured polymers are particularly valued in the papermaking industry.