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Mark S Hickman, Loren E Johnson, John L Stoffel, Ronald A Askeland, Catherine B Hunt, Howard Matrick, Keshava A Prasad, John T Rich, Leonard Slevin, John R Moffatt: Aqueous ink compositions containing anti-curl agents. E I Du Pont de Nemours and Company, October 18, 1994: US05356464 (123 worldwide citation)

Aqueous ink compositions containing anti-curl agents substantially reduce or eliminate paper curl in plain-paper printed elements without adversely effecting storage stability, decap properties or print quality, and thus eliminate the need for expensive and bulky mechanical curl-arresting devices or ...


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Edward J Sommer, John T Rich: Application of Raman spectroscopy to identification and sorting of post-consumer plastics for recycling. National Recovery Technologies, Foley & Lardner, November 6, 2001: US06313423 (18 worldwide citation)

A high accuracy rapid system for sorting a plurality of waste products by polymer type. The invention involves the application of Raman spectroscopy and complex identification techniques to identify and sort post-consumer plastics for recycling. The invention reads information unique to the molecula ...


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Robert D Guenard, Muhammad A Shafi, Terry W Glass, Mary A Leugers, Edward J Sommer Jr, John T Rich: Process and apparatus for spectroscopic identification and sorting of barrier materials. National Recovery Technologies, Wyatt Tarrant & Combs, February 15, 2005: US06855901 (10 worldwide citation)

An apparatus and process that makes use of spectral information in the mid-infrared range (400 to 4500 cm−1) to identify recyclable materials containing barrier polymers from recyclable materials not containing barrier polymers, which includes projecting light containing the mid-infrared (MIR) range ...


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