Patents by Inventor Andrew C. Palm

Andrew C. Palm has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for using a phloroglucinol color delta to control blending, deinking and bleaching of groundwood-containing secondary pulp
    Patent number: 7074299
    Abstract: A method of processing papermaking fiber includes characterizing the initial color of the pulp and the color of the pulp after treatment with a phloroglucinol stain. The color response of the pulp to the stain has been found to be a better indicator of processing needs for secondary pulps in particular and in any event is selective for untreated groundwood as opposed to conventional groundwood identification methods. The color difference is used to target a suitable product for the pulp, to aid in bleaching/deinking strategy or to enable optimization of fiber blending for particular products. In a preferred embodiment the process includes determining changes in CIE L*, a*, b* and brightness values before and after staining of the pulp.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: July 11, 2006
    Assignee: Fort James Corporation
    Inventors: Henry Chou, Hazen C. Thomas, Andrew C. Palm, Terry P. Witkowski, Robert J. Clausing, Stephanie Keen, David J. DiPietro
  • Process for facilitating the use of high lignin containing waste paper in the manufacture of paper products
    Publication number: 20040079497
    Abstract: A method of processing papermaking fiber includes characterizing the initial color of the pulp and the color of the pulp after treatment with a phloroglucinol stain. The color response of the pulp to the stain has been found to be a better indicator of processing needs for secondary pulps in particular and in any event is selective for untreated groundwood as opposed to conventional groundwood identification methods. The color difference is used to target a suitable product for the pulp, to aid in bleaching/deinking strategy or to enable optimization of fiber blending for particular products. In a preferred embodiment the process includes determining changes in CIE L*, a*, b* and brightness values before and after staining of the pulp.
    Type: Application
    Filed: April 29, 2003
    Publication date: April 29, 2004
    Inventors: Henry Chou, Hazen C. Thomas, Andrew C. Palm, Terry P. Witkowski, Robert J. Clausing, Stephanie Keen, David J. DiPietro
  • Process for facilitating the use of high lignin containing waste paper in the manufacture of paper products
    Publication number: 20040000383
    Abstract: This invention relates to a rapid process for determining groundwood pulp derived from waste paper. The process comprises (a) preparing a pulp from recycle furnish to form secondary papermaking fiber; and (b) preparing an absorbent sheet from said secondary papermaking fiber, characterizing the initial color of the absorbent sheet and staining the absorbent sheet with a phloroglucinol stain, characterizing the color of the absorbent sheet and comparing the color of the stained sheet with the initial color and selecting a target paper product based on the comparison.
    Type: Application
    Filed: April 29, 2003
    Publication date: January 1, 2004
    Inventors: Henry Chou, Hazen C. Thomas, Andrew C. Palm, Terry P. Witkowski, Robert J. Clausing, Stephanie Keen, David J. DiPietro