Dawn E Smith, Carl M Lentz, Dene H Taylor, Yvonne Osunga, Brian Huffman: Freeze indicators with a controlled temperature response. Temptime Corporation, K&L Gates, February 28, 2012: US08122844 (8 worldwide citation)

A freeze indicator can include an indicator dispersion having an aqueous liquid medium and organic material indicator particles dispersed in the aqueous liquid medium. The indicator dispersion can have an initial appearance before freezing and an irreversibly different appearance after freezing and ...

Dene H Taylor, Carl M Lentz, Dawn E Smith: Color-changing emulsions for freeze indicators. Temptime Corporation, K&L Gates, April 30, 2013: US08430053 (7 worldwide citation)

A color-changing emulsion for use in a freeze indicator can employ a dispersion medium, for example, an aqueous liquid, a first reactant phase and a second reactant phase, which two reactant phases can both be dispersed in the dispersion medium. The first reactant phase includes a hydrophobic liquid ...

Brian S Huffman, Dawn E Smith, Carl M Lentz: Temperature-activated time-temperature indicator. Temptime Corporation, K&L Gates, March 18, 2014: US08671871 (6 worldwide citation)

A temperature-activatable time-temperature indicator that can be used to monitor the historical exposure of a host product to ambient temperatures includes an optically readable, thermally sensitive indicator element. The indicator element can be inactive below a base temperature and is intrinsicall ...

Carl M Lentz, Bruce L Gustafson, Dale E Van Sickle, Joseph S Bowers Jr: Synthesis of phenylhydroquinones. Eastman Kodak Company, S E Reiter, William P Heath Jr, July 11, 1989: US04847429 (6 worldwide citation)

Process is disclosed for the preparation of phenylhydroquinones by the alkylation of hydroquinone (or derivatives thereof) with the cyclohexyl moieties, cyclohexanol or cyclohexene (or derivatives thereof), followed by dehydrogenation of the intermediate cyclohexylhydroquinone.

Carl M Lentz, Bruce L Gustafson, Paul S Wehner: Catalyst composition and method for selective dehydrogenation. Eastman Kodak Company, S E Reiter, William P Heath Jr, January 17, 1989: US04798911 (6 worldwide citation)

A method for selective dehydrogenation of a compound, comprising contacting a compound of the formula ##STR1## wherein each R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently selected from the group consisting of H, (C.sub.1 -C.sub.20) alkyl, (C.sub.3 -C.sub.20) cycloalkyl, (C.sub.6 -C.sub.20) a ...

Carl M Lentz, James R Overton, David D Cornell: Carbonylation process for the production of aromatic acids and derivatives thereof. Eastman Kodak Company, Clyde L Tootle, David E Cotey, J Frederick Thomsen, March 19, 1985: US04506092 (5 worldwide citation)

The present invention provides a process for the preparation of aryl carboxylic acids and derivatives thereof by the carbonylation of triaryl sulfonium salts. The triaryl sulfonium salts are reacted with carbon monoxide and water or an alcohol or amine in the presence of a triaryl phosphine and a ze ...

Frederick R Grabiner, Carl M Lentz, Emily Moore, Thaddeus Prusik, Nicholas Puro, Bruce Erik Osborn: Computing systems and methods for electronically indicating the acceptability of a product. TEMPTIME CORPORATION, K&L Gates, December 29, 2015: US09224120 (3 worldwide citation)

In part, the invention relates to computing systems and methods for electronically indicating the acceptability of a product. An image capture and communication device may analyze a product label that includes one or more monitors, authentication elements, and identification elements. The image capt ...

Michael R Cushman, Carl M Lentz, David D Cornell: Electrochemical synthesis of diaryliodonium salts. Eastman Kodak Company, Betty J James, William P Heath Jr, January 11, 1994: US05277767 (3 worldwide citation)

Electrochemical process for preparing diaryliodonium salts using a single compartment and a carbon anode. The process has high current efficiency and, optionally, increased para, para' regioselectivity. The process proceeds in the presence of a solvent such as acetic acid and an electrolyte such as ...

Carl M Lentz, Michael R Cushman, James R Overton, David D Cornell: Electrolytic method of simultaneously preparing diaryliodonium salt and alkoxide salt and method of preparing ester of an aromatic acid. Eastman Kodak Company, Charles R Martin, William P Heath Jr, July 26, 1988: US04759833 (3 worldwide citation)

An electrolytic method for the simultaneous preparation of a diaryliodonium salt and an alkoxide salt comprises adding to the anode compartment of an electrolytic cell, comprised of an anode, a first electrolytic solution comprising an aromatic compound, an iodoaromatic compound, a solvent and a fir ...

Carl M Lentz, Edward T Mullins, Charles L Gibson: Hydrogenation of halonitroaromatic compounds. Eastman Kodak Company, J Frederick Thomsen, William P Heath Jr, May 29, 1990: US04929737 (3 worldwide citation)

Disclosed is an improved process for the preparation of haloaromatic amines by the catalytic hydrogenation of halonitroaromatic compounds in the presence of a chromium-containing Raney cobalt catalyst. The catalyst gives good hydrogenation rates while minimizing formation of dehalogenated by-product ...