81
Gregory Hirsch: Tapered capillary optics. Townsend and Townsend and Crew, June 30, 1998: US05772903 (27 worldwide citation)

A metal or glass wire is etched with great precision into a very narrowly tapering cone which has the shape of the desired final capillary-optics bore. By controlling the rate of removal of the wire from an etchant bath, a carefully controlled taper is produced. A sensor measures the diameter of the ...


82
Donald C Erickson: Nitrogen and oxygen via chemical air separation. September 1, 1981: US04287170 (27 worldwide citation)

A chemical process for separating air into both oxygen and purified nitrogen is disclosed. Bulk oxygen removal is accomplished using an oxygen acceptor such as molten alkali nitrite solution, SrO, or Pr-Ce oxides. The remaining oxygen is removed by reaction with a scavenger such as MnO or others. Th ...


83
Peter J Loftus, Charles E Benson, Roberto O Pellizzari, Richard R Martin: Variable heat flux low emissions burner. Gas Research, Factor and Shaftal, November 30, 1999: US05993193 (26 worldwide citation)

A gas fired burner is provided for use in applications such as chemical process furnaces for process heaters in refineries and chemical plants, and the like. The burner is provided with a plurality of fuel gas inlets for enabling manipulation of the flame shape and combustion characteristics of the ...


84
J Gregory Hollingshead: Unified modular multi-directional flow chemical distribution block. Robert C Kowert, Conley Rose & Tayon P C, July 11, 2000: US06085783 (26 worldwide citation)

Modular chemical delivery substrate blocks which have both directional and transverse flow direction capabilities united in a single modular substrate block and which utilize localized fastener substrate joining techniques unique to such a design. The design, which incorporates current semiconductor ...


85
John C Wollensak: Chemical process for forming 2,6-dimethylaniline. Ethyl Corporation, Donald L Johnson, Robert A Linn, Joseph D Odenweller, January 6, 1976: US03931298 (26 worldwide citation)

Hydroxy aromatics are aminated to form the corresponding aromatic amine by reaction at 200.degree.-400.degree.C with ammonia in the presence of a cyclohexanone and water in contact with a hydrogen transfer catalyst. For example, 2,6-dimethylphenol reacts with ammonia in the presence of cyclohexanone ...


86
William H Gerdes, Donald J Remus, Thomas Szymanski, James A Wolford: Catalyst carrier. Norton Chemical Process Products, David Bennett, January 24, 1995: US05384302 (26 worldwide citation)

A catalyst carrier that is comprised of relatively large alpha alumina particles dispersed in matrix that comprises an alpha alumina formed in situ by a sol-gel process has excellent crush resistance while retaining good porosity and catalytic performance.


87
David Segev: Chemical process for amplifying and detecting nucleic acid sequences. ImClone Systems Incorporated, Irving N Feit, Thomas C Gallagher, Eric J Sheets, December 8, 1998: US05846709 (26 worldwide citation)

The present invention is directed to a method of amplifying and detecting single or double stranded target nucleic acid molecules. Amplification of the target nucleic acid molecule is accomplished by using at least two chemically modified oligonucleotide probes per target nucleic acid molecule to fo ...


88
Wayne Breidford, Christy A Lancaster, Jon Wallace Hayenga, Ronald L Bardell, Jeffrey F Tonn, Bernhard H Weigl: System and method for heating, cooling and heat cycling on microfluidic device. Micronics, Seed IP Law Group PLLC, June 9, 2009: US07544506 (25 worldwide citation)

An integrated heat exchange system on a microfluidic card. According to one aspect of the invention, the portable microfluidic card has a heating, cooling and heat cycling system on-board such that the card can be used portably. The microfluidic card includes one or more reservoirs containing exothe ...


89
Joseph C Gentry: Catalyst assembly and method for chemical process tower. Glitsch, Johnson & Wortley, February 14, 1995: US05389343 (25 worldwide citation)

Improved catalyst assemblies for vapor/liquid contact towers. Bundles of catalyst media used to promote chemical reactions are disposed substantially in the vapor phase of the tower, such as beneath trays therein for improving mass transfer efficiency. Unlike previous assemblies, wherein distillatio ...


90
Michael T Flavin, Lisa M Seaney: Use of automated technology in chemical process research and development. Advanced Life Sciences, McDonnell Boehnen Hulbert & Berghoff, March 28, 2000: US06044212 (25 worldwide citation)

A method and workstation for optimizing chemical processes based on combinatorial chemistry, automation technology, and computer-controlled design is disclosed. The workstation includes a synthesizer, an analyzer, a robot and computer in communication with the synthesizer and analyzer. The computer ...