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    Author(s): Roland GleisnerKaren Scallon; Michael Fleischmann; Julie Blankenburg; Marguerite Sykes
    Date: 2005
    Source: Progress in paper recycling. Vol. 14, no. 3 (May 2005): pages 24-39
    Publication Series: Miscellaneous Publication
    PDF: Download Publication  (123 KB)


    This review summarizes patents related to paper recycling that first appeared in patent databases during the 2004. Two on-line databases, Claims/U.S. Patents Abstracts and Derwent World Patents Index, were searched for this review. This feature is intended to inform readers about recent developments in equipment design, chemicals, and process technologies for recycling paper and alternative products derived from post-consumer paper. Only briefsummaries of individual inventions are included in this review. Because many of the patents are not readily available in English, much of the information was extracted from abstracts that were translated to English. For more complete information, readers will need to access the full text of a specific patent. Three excellent on-line sources for further review are located at,, and http:/ / As an indication of the amount of patent activity in the papermaking field, the 104 patents reviewed here were selected from 255 patent abstracts obtained in an initial search. Patents in this review were selected on the basis of their specific applicability to the paper recycling industry compared with papermaking in general.

    Publication Notes

    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.


    Gleisner, Roland; Scallon, Karen; Fleischmann, Michael; Blankenburg, Julie; Sykes, Marguerite. 2005. Annual patents review, January-December 2004. Progress in paper recycling. Vol. 14, no. 3 (May 2005): pages 24-39


    Chemical, contaminant, deinking, enzyme, patent, reclaimed fiber, reclaimed paper, recycling, review, stickies

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