1
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 ...


2
Loren E Johnson, Kenneth A Norton, Norman E Pawlowski, Margaret L Wooding: Low glycol inks for plain paper printing. Hewlett Packard Company, William J Bethurum, August 1, 1989: US04853037 (102 worldwide citation)

An ink composition for printing on plain paper and other media using a thermal ink-jet printer is provided. The ink composition comprises at least one member selected from the group consisting of ethylene glycol and diethylene glycol, present in an amount ranging from about 5 to 10 wt %; dye, rangin ...


3
John L Stoffel, David H Donovan, Loren E Johnson, John R Moffatt: Aqueous inks having improved halo characteristics. E I Du Pont de Nemours and Company, March 28, 1995: US05401303 (82 worldwide citation)

Halo effect seen at the interface between a first ink, exhibiting sharp edge acuity, and a second ink, having low surface energy, is addressed by adding certain fluorocarbon compounds to the first ink. Edge acuity of the first ink is maintained.


4
Loren E Johnson, Hiang P Lauw, Norman E Pawlowski, James P Shields, John M Skene: Thermal ink-jet inks having reduced black to color and color to color bleed. Hewlett Packard Company, July 16, 1996: US05536306 (57 worldwide citation)

A set of thermal ink-jet inks and method for formulating the same are provided in which the cyan, magenta, and yellow inks contain a combination of surfactants and inorganic salts designed to reduce both color to color bleed as well as black to color bleed. In general, the present cyan, magenta, and ...


5
Norman E Pawlowski, Loren E Johnson, Hiang P Lauw, James P Shields, Zia Rehman: Use of co-surfactants to adjust properties of ink-jet inks. Hewlett Packard Company, May 6, 1997: US05626655 (54 worldwide citation)

An ink-jet ink composition is provided which includes at least one primary surfactant and at least one co-surfactant, with the co-surfactant having an HLB at least about 1.5 units higher than that of the primary surfactant. The co-surfactant imparts good wetting and cloud point characteristics to th ...


6
Ravi Prasad, Qin Liu, Loren E Johnson, Michael L Bullock, Winthrop D Childers, L Chris Mann, Joseph W Tsang: Fuel supply for a fuel cell. Hewlett Packard Development Company, Walter W Karnstein, August 2, 2005: US06924054 (51 worldwide citation)

The present invention concerns a fuel supply for a fuel cell. The fuel supply includes a fuel storage area configured to hold a fuel solution, a fuel solution outlet configured to pass the fuel solution from the fuel storage area, a waste storage area, a waste inlet configured to pass waste into the ...


7
John L Stoffel, Arthur C Shor, Harry J Spinelli, Sheau Hwa Ma, Howard Matrick, Mark L Choy, Loren E Johnson: Process for alleviating bleed in printed elements. E I Du Pont de Nemours and Company, September 10, 1996: US05555008 (43 worldwide citation)

A process for alleviating bleed and improving color in printed elements comprises applying an anionic printing liquid and a cationic printing liquid to a substrate adjacent to one another, wherein at least one of the printing liquids contains a polymer and reacting the anionic and cationic printing ...


8
Loren E Johnson, John R Moffatt: High chroma color dye-set for use in ink-jet inks employing polysaccharide-containing vehicles. Hewlett Packard Company, April 28, 1992: US05108504 (42 worldwide citation)

A set of dyes is provided for use in vehicles employing high molecular weight saccharides. The dye-set comprises about 1 to 4% xanthene magenta, about 0.9 to 2% of a mixture of Acid Yellow 23 and Direct Yellow 86, and about 0.75 to 2.5 of Acid Blue 9 or a mixture of Acid Blue 9 and a copper phthaloc ...


9
David E Hackleman, Loren E Johnson, Kenneth A Norton: Increased solubility of carbon black. Hewlett Packard Company, William J Bethurum, June 2, 1987: US04670059 (35 worldwide citation)

A process for increasing the solubility of carbon black in desired solvents is provided. The process comprises (a) forming a suspension of the carbon black in a non-reactive medium, such as an aromatic hydrocarbon, (b) adding a silylating agent, such as an organosilane, (c) removing the reaction pro ...


10
Donald E Wenzel, Loren E Johnson, Hiang P Lauw: Dye preparation for thermal ink-jet printheads using ion exchange. Hewlett Packard Company, William J Bethurum, November 22, 1988: US04786327 (33 worldwide citation)

A process is provided for reducing the crusting propensity of dyes, complexed with sodium or other cations, used in ink-jet print heads and for improving other properties of such dyes. The process comprises replacing at least a portion of the cations on such dyes with preselected cations, such as th ...