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

Icon_funbox Quotables

"The Americans have need of the telephone, but we do not. We have plenty of messenger boys."

Sir William Preece, chief engineer, British Post Office ; 1878

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Examiner: Chan, Nicky


Primary examiner statistics: 1696 patents; average approval time: 668 days
Assistant examiner statistics: 148 patents; average approval time: 693 days

Patents as Primary Examiner (view all)

Patent No. Patent Title:
5827794 Supported highly-polar liquid phase chiral sulfonated binap catal...
5770756 Highly concentrated alkyl sulphate solutions
5756838 Method of asymmetrically synthesizing optically active compounds ...
5741813 Compounds for the treatment of hepatoma
5741784 Benzopyran derivatives and their use
5733927 Salts of glucopyranose derivative and solutions of the same
5723632 Total synthesis of antitumor acylfulvenes
5719183 Endothelin receptor antagonists
5719182 Endothelin receptor anatagonists
5716985 Endothelin receptor antagonists
5716984 Endothelin receptor antagonists
5714620 Polyhydric phenol compound and positive resist composition compri...
5714621 1,3-benzodioxole and 1,2-dialkoxybenzene derivatives as ocular ...
5710288 1,3-benzodioxole and 1,2-dialkoxybenzene derivatives as ocular ...
5705659 Intermediates for the synthesis of 16-phenoxy-prostatrienoic acid...
5703252 Recovery of Tocopherols
5698137 Optically active dihydropyran derivative, and liquid crystal ...
5698716 Process for chroman carboxylates
5688973 Process for the production of 2-vinyl-1,3-dioxolane
5686632 Method of producing a tocopherol product
5684183 Method for preparing 4-alkyl-2-hydroxy-3,5-dichlorobenzene sulpho...
5684039 Chroman-2-ylmethylamino derivatives
5684162 Leukotriene B4 antagonists
5681978 Method for the stereocontrolled synthesis of stegobinone and usef...
5679805 Photochromic spironaphthopyran compounds
5675024 Aryl or heteroaryl amides of tetrahydronaphthalene, chroman, thio...
5675023 Chromone derivative, and aldose reductase inhibitor comprising sa...
5675040 Process for the preparation of sulphones
5672722 Color fade inhibitor
5672757 N-methyldeacetylcolchiceinamide derivatives
5670669 Recovery of tocopherols
5670690 Compositions and methods for removal of detergents
5670531 Amino acid derivatives, the process for their preparation and the...
5670668 Crystalline tocotrienol esters
5670665 Process for the preparation of fluorine-substituted aminobenzodio...
5670632 Process for obtaining an isoflavone concentrate from a soybean ex...
5670664 Photosensitive organic compounds that release carbon monoxide upo...
5667721 Liquid crystalline di-1,3-dioxane derivatives
5663426 Sulfonated phosphines, processes for their preparation, and use t...
5663422 Process for the production of 1,2-diacetoxy esters

Patents as Assistant Examiner (view all)

Patent No. Patent Title:
4059595 Process for preparing 3-oxy-4H-pyran-4-one derivatives
4057419 2,4-Bis-(trifluoromethyl)-6-nitrophenol compounds and herbicidal ...
4056564 Dihydroxy sulphonates containing ether structures
4054581 Preparation of cis-1-hydroxy-3-substituted-6,6-dimethyl-6,6a...
4054580 Process for producing 2,2,4-trimethyl-6-hydroxy-7-substituted chr...
4054582 Process for converting cis-hexahydrodibenzo[b,d]pyran-9-ones to ...
4054583 Process for converting 2,7-dihydroxy-5-isopropylidene-9-subs...
4054599 Sulfoxidation process
4053499 O,S-Dialkyl O-sulfonyloxyphenyl phosphorothiolates and phosp...
4052445 Process for the production of alkyl sulfonic acids
4052444 N-(aminobenzoyl)-aminoarylsulfonic acids
4051176 Ureidophenylenebis(carbonylimino)dinaphthalenetrisulfonic acid co...
4051177 Process for the preparation of unsaturated amino compounds
4051152 Oxo C-ring benzopyrans
4048195 Process of synthesizing substituted indanones
4048221 Diols containing sulphonic acid groups based on dihydroxy alkenes
4046804 Process for preparing a novel benzylamine hydrate
4046805 Substituted-hydroxy-naphthalenedisulfonic acid compounds
4046806 Method of preparing a disalt of 3,3-sulfonylbis (6-hydroxybenzene...
4045452 Steroid total synthesis process utilizing a cyanoalkyl A-ring pre...
4045610 Antibiotics designated XK-88 series
4045451 2-(Methylthio)naphtho[1,3-bc]pyran-3(2H)-one
4039559 Aliphatic carboxylic acid esters of Vitamin E and process for ...
4036857 Benzopyrans having an unsaturated side chain
4034001 Bis-amidoalkanesulfonic acids and salts thereof
4031125 3-Sulfonate ester of 2,3-dihydroxypropylamine
4029677 Spirodipyrans useful as dye precursors for copying processes
4026907 Antioxidant chroman compounds
4026926 Process for the preparation of methallyl sulfonic acid and its sa...
4026940 Process for producing alpha-sulfophenylacetic acid derivatives
4025535 Sulfoalkylated flavanone sweeteners
4025516 Process for the preparation of (-)-6a,10a-trans-6a,7,8,10a-t...
4025542 Novel ethers, their preparation and use as oxydimethylating agent...
4025544 O-alkylsulfonylglycolic anilides
4025536 Tri-cyclic compounds derived from thiaphloroglucinol ethers
4024160 Substituted 2-amino chromones and process for the preparation the...
4018798 Substituted (4-oxo-4H-1-benzopyran-2-yl)cyclopropane carboxylic a...
4018799 Antioxidant chroman compounds
4016178 Synthesis of vitamin E
4014926 Fluorinated sulfonic acids and derivatives thereof
 
Sign InRegister
Username  
Password   
forgot password?