U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

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...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.

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Examiner: Siegel, Alan


Primary examiner statistics: 1461 patents; average approval time: 701 days
Assistant examiner statistics: 4 patents; average approval time: 1710 days

Patents as Primary Examiner (view all)

Patent No. Patent Title:
6720465 Preparation of highly pure fluorine compounds
6710216 Method and apparatus for recovering a solvent
6566567 Catalyst and method for producing 1,1-difluoroethane
6552238 Separation of heavy ends from streams of halogenated alkanes
6551469 Photochlorination of 1,1,1,3,3-pentafluoropropane
6548719 Process for producing fluoroolefins
6538165 Process for producing difluoromethane and difluorochloromethane
6534688 Dehydrochlorination stabilization of polychlorinated alkanes
6528693 Preparation of cyclopropylethyne and intermediates for preparatio...
6528692 Process for producing bromo-aromatic condensed ring compound
6528691 Preparation of 245fa
6521802 Process for preparing fluorine-containing halogenated hydrocarbon...
6521803 Method for separating a mixture comprising at least an hydrofluor...
6518467 Method of making hydrofluorocarbons and hydrochlorofluorocarbons
6515187 Process for recovering acrolein or propionaldehyde from dilute aq...
6515163 Hydrogenated phenanthrenes and their use in liquid-crystal mixtur...
6512150 Process for purifying pentafluoroethane from chloropentafluoroeth...
6509495 Selective hydrodehalogenation method
6506950 Saturated linear polyfluorohydrocarbons, processes for their prod...
6506952 Production of hexabromocyclododecane of enhanced gamma isomer con...
6506951 Process for producing brominated trifluoromethylbenzenes
6503865 Method of preparing pentafluoroethane, catalysts for fluorination...
6504044 Process for the preparation of 1-[cyano(aryl)methyl] cyclohexanol
6500994 Purification of 1,1,1,3,3-pentafluorobutane
6500995 Water-enhanced production of 1,1,1,3,3,-pentachloropropane
6492569 Process for the preparation of tetrafluorohalogenbenzenes
6492559 Alkylated aminoether surfactants
6489523 Process for producing hexafluoroethane and use thereof
6489525 Methods for preparing primary alkyl bromides
6486358 Process for the purification and formulation of o-phthalaldehyde
6486212 Semifluorinated alkanes and the use thereof
6482996 Method for the production or preparation of 2,6-dichlorotoluol
6479718 Liquid phase process for HCFC-123
6479717 Process for eliminating chlorine from chlorofluorocarbons
6479715 Process for the preparation of alkylene glycols
6476281 Method for the preparation of 1,1,1,3,3-pentafluoropropene and ...
6472573 Process for producing 1,1,1,3,3-pentafluoropropane
6465701 Catalyst and oxychlorination process using it
6458846 Ion channel modulating agents
6455745 Manufacturing method for fluorine-containing ethane

Patents as Assistant Examiner

Patent No. Patent Title:
4066665 2-Alkylamino-଱-phenyl-1-cyclohexene-1-methyleneimine, its s...
4066693 Process for the preparation of urea
4016203 Process for the manufacture of compounds containing vinyl groups
3960954 Process for preparing oximes and hydroxylamines
 
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