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

Icon_funbox Bizarre Patents

Patent No. 5508049

Pizza Pie With Concentric Rings of Crust

A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.

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.

 

Class 204/157.78 - Oxygen containing


Subclass of Class 204 - Chemistry: electrical and wave energy
Definition: Subject matter wherein the sulfur product produced also
No. of patents: 41
Last issue date: 09/23/2003


1    
NumberTitleIssue Date
6624328Preparation of perfluorinated vinyl ethers having a sulfonyl fluoride end-group
A method is provided for making a perfluorinated vinyl ether having a sulfonyl fluoride end-group according to the formula FSO2 --(CF2)n --O--CF.dbd.CF2, where n is 2-5, comprising the steps of: a) fluorination ...
09/23/2003
6551467Microwave facilitated allyllic substitution
The present invention is draw to microwave heating of a transition metal-catalysed organic reaction, in which a catalyst complex between a transition metal and an auxiliary ligand or ligands, the ligand being asymmetric or symmetric, monodentate or bident...
04/22/2003
6207025Preparation of methane sulfonic acid
A process for preparing methanesulfonic acid by irradiating a mixture comprising acetic acid, sulfur dioxide and oxygen with light, wherein the reaction mixture is irradiated with an average cumulative irradiance in the range from 240 to 320 mm of from 0....
03/27/2001
6156163Reactant, compound and process for the perfluoroalkylation of the nucleophile, and the derivatives obtained
A reagent comprising a compound of formula (I): Rf --M(X) (Z)n --Y--R, wherein R is a hydrocarbon radical advantageously having at most 10 carbon atoms and being selected from alkyls and aryls; Rf is a radical of formula I...
12/05/2000
6114407Sulfonated polymers
Methods of sulfonating a polymer are provided. One method of sulfonating a polymer includes exposing sulfur dioxide and oxygen to free radical producing energy and contacting the polymer with the product of preceding step. Desirably, the steps of exposing...
09/05/2000
6066286Method of sulfonating polymers
Methods of sulfonating a polymer are provided. One method of sulfonating a polymer includes exposing sulfur dioxide and oxygen to free radical producing energy and contacting the polymer with the product of preceding step. Desirably, the steps of exposing...
05/23/2000
5994110Methods for direct synthesis of compounds having complementary structure to a desired molecular entity and use thereof
Compounds which possess a complementary structure to a desired molecule, such as a biomolecule, in particular polymeric or oligomeric compounds, which are useful as in vivo or in vitro diagnostic and therapeutic agents are provided. Also, various methods ...
11/30/1999
5798078Sulfonated polymers and method of sulfonating polymers
Methods of sulfonating a polymer are provided. One method of sulfonating a polymer includes exposing sulfur dioxide and oxygen to free radical producing energy and contacting the polymer with the product of preceding step. Desirably, the steps of exposing...
08/25/1998
5698830Process for the preparation of alkanesulphonic acids
The invention relates to the preparation of alkanesulphonic acids by photo-oxidation of dialkyl disulphides. The procedure is carried out in solution in an alcohol using a light source irradiating between 200 and 320 nm....
12/16/1997
5153352Process for preparation of intermediates of carbocyclic nucleoside analogs
A compound of the formula: ##STR1## wherein A is a purin-9-yl group, a heterocyclic isostere of a purin-9-yl group, a pyrimidin-1-yl group or a heterocyclic isostere of a pyrimidin-1-yl group; E is hydrogen, --CH2 OH or --OH; and G and D ...
10/06/1992
4997988Oxa-organic sulfur compounds, their preparation and use
Oxa-organic sulfur compounds, methods of preparing such compounds and methods of using the compounds as polymer chain length terminating agents are provided. The compounds are prepared by reacting allyl alcohol in the presence of a basic catalyst with a c...
03/05/1991
4997535Method of manufacturing methanesulfonyl chloride
This invention is concerned with the manufacture of methanesulfonyl chloride from a mixture of methane, sulfur dioxide gas and chloride gas under irradiation of light having a wave length of 200~600 nm from a low vapor pressure mercury lamp, a high vapor ...
03/05/1991
4944853Photochemical preparation of 3-(organothio) aldehydes
A process is disclosed for the preparation of 3-(organothio)aldehydes by reacting a mercaptan with an ଱, ଲ-unsaturated aliphatic aldehyde under actinic radiation in the absence of an oxygen-containing gas wherein the mercaptan and aldehyde are...
07/31/1990
4837364Processes for preparing pentafluoroethoxy- and pentafluoroethylthiobenzene drivatives
A process for the preparation of (pentafluoroethoxy)- and (pentafluoroethylthio)benzene derivatives either from phenol, thiophenol or from halobenzene. A halobenzene is reacted with trifluoroethanol or a phenol or a thiophenol is reacted with a compound o...
06/06/1989
4832807Phosphorylation of alcohols
Phosphorylation of alcohols by contacting the alcohol with a phosphorous sulphide under the impact of ultrasound. The phosporylated produce can be converted into a metal salt, which is a suitable anti-wear additive for lubricating oils....
05/23/1989
4643813Process for producing alkanesulfonic acids
A process for producing an alkanesulfonic acid is described, which comprises causing sulfur dioxide and oxygen to act on a saturated hydrocarbon under illumination with light in a substantially water-free reaction system, wherein photo-sulfoxidation of th...
02/17/1987
45620042,3,5,6-Tetrasubstituted p-benzoquinones and their preparation
2,3,5,6-Tetrasubstituted p-benzoquinones of the formula I ##STR1## where R is bromine, C2 -C6 -acylthio or benzoylthio, their preparation and their use for the preparation of 4,8-dihydrobenzo[1,2-c:4,5-c']dithiophene-4,8-dione a...
12/31/1985
4518537Process for isolating paraffinsulfonate from the reaction mixture obtained on sulfoxidating paraffins
Process for isolating paraffinsulfonate from the extracts obtained on sulfoxidating n-paraffins by first of all separating off the bulk of the paraffin by adding alcohol at about 5°-55° C., then adding an amount of alkali required for neutralization in ...
05/21/1985
4481148Hydroxyl containing liquid polymers
Hydroxyl-containing liquid polymers having an aliphatic polymeric backbone and sulfide linkages near the terminal portions of the polymer molecule are prepared by polymerizing (1) at least one of selected vinylidene monomers having at least one terminal C...
11/06/1984
4443310Photoinitiated synthesis of mercaptans
Improvement in the photoinitiated synthesis of mercaptans, in which an ethylenic compound is treated with hydrogen sulphide, preferably under pressure, in the presence of ultraviolet radiation and a photoinitiator involves the use of a xanthenic compound,...
04/17/1984
4357307Method of separating isotopes in which a compounding of selectivity is achieved by limiting the timing of the collection step
Methods for separating isotopes are disclosed including providing molecules which contain the element whose isotopes are to be separated and which have an isotopically shifted but overlapping infrared absorption spectrum associated with those isotopes whi...
11/02/1982
4344889Process for the continuous preparation of sulfonates derived from molecules having long alkyl chains and, more particularly, sulfonates derived from fatty esters
The starting material is subjected to the action of a sulfonating agent; the sulfonation product so obtained is degassed (2) and treated with slightly aqueous methanol in order to obtain, on the one hand, an ester phase containing the unsulfonated startin...
08/17/1982
4342694Processes for producing pyrethroid insecticide intermediates
Processes for producing a (1଱, 4଱, 5଱)-6,6-dimethyl-4-halo-substituted-methyl-3-oxabicyclo[3.1.0]hexan- 2-one and its novel intermediates from known and inexpensive starting materials are described and exemplified. The halomethyl bicyclic...
08/03/1982
4334969Photochemical process for the synthesis of strobilurin
Process for stereoselective synthesis of strobilurin in the (E) configuration, starting from cinnamaldehyde and 2-oxobutyric acid....
06/15/1982
4284483Hydroxyl-terminated liquid polymers and process for preparation thereof using a mixture of at least one hydroxyl-containing disulfide and at least one hydroxyl-containing trisulfide
Hydroxyl-terminated liquid polymers having an aliphatic polymeric backbone and sulfide linkages near the terminal portions of the polymer molecule are prepared by polymerizing (1) at least one vinylidene monomer having at least one terminal CH2...
08/18/1981
4257858Photochemical method for producing biocidal 2-aryl-1,3-cyclohexanedione compounds
2-Aryl-1,3-cyclohexanedione compounds and their alkali metal and ammonium salts exhibit outstanding herbicidal, miticidal and mite ovicidal activity....
03/24/1981
4207238Hydroxyl-terminated liquid polymers and process for preparation thereof using a mixture of at least one hydroxyl-containing disulfide and at least one hydroxyl-containing trisulfide
Hydroxyl-terminated liquid polymers having an aliphatic polymeric backbone and sulfide linkages near the terminal portions of the polymer molecule are prepared by polymerizing (1) at least one vinylidene monomer having at least one terminal CH2...
06/10/1980
4188273Process for preparing novel thin films
A thin film of less than 300 microns in thickness can be obtained by crosslinking a surfactant with plasma or radiation. This thin film is as high in strength as an ordinary plastic film, and is usable as a substance-separating film, a substance-protectin...
02/12/1980
4140604Process for preparing mercaptans
An improvement in the process for preparing mercaptans wherein an ethylenically unsaturated organic compound is reacted with hydrogen sulfide that is present in molar excess, catalyzed by UV light, with recovery of the desired mercaptan from the reaction ...
02/20/1979
4120766Hydroxyl-containing liquid polymers and process for preparation thereof
Hydroxyl-containing liquid polymers having an aliphatic polymeric backbone and sulfide linkages near the terminal portions of the polymer molecule are prepared by polymerizing (1) at least one of selected vinylidene monomers having at least one terminal C...
10/17/1978
4082712Process for curing sulfhydryl-terminated thioether polymers
An improved process for curing sulfhydryl-terminated thioether polymers substantially devoid of aliphatic unsaturation having a sulfhydryl functionality of 2 to 3 to obtain thioether elastomers is disclosed wherein the liquid thioether is reacted with a c...
04/04/1978
4076607Process for coal desulfurization
A process for coal desulfurization generates extremely low amounts of heat from microwave energy to induce thermochenical, in-situ, reactions to liberate sulfur in the form of stable gaseous species, such as H2 S, COS and SO2....
02/28/1978
4052281Method for production of sulfhydryl compounds
An improved process is disclosed for production of sulfhydryl-terminated compounds by reaction of an allene and hydrogen sulfide initiated with ultraviolet light of wavelength above about 2600 Angstroms to obtain a colorless product of improved purity. Th...
10/04/1977
4040921Process for beta-hydroxyalkylsulfoxides
Beta-hydroxyalkylsulfoxides are prepared by reacting an olefin and a thiol with oxygen in the presence of a dye sensitizer using visible light as an energy source at a temperature from -10° to 70° C....
08/09/1977
4004572Solar energy collection and retrieval employing reversible photochemical isomerization
A process for photochemical collection, storage, and retrieval of solar energy, including solar energy in the visible and near-infrared light spectrum, comprising: exposing to solar radiation of a trans-isomer of particular geometrically isomerizable comp...
01/25/1977
4000049Method and device for preparing sulphonic acids derived from paraffinic hydrocarbons
The instant invention relates to a method for preparing paraffin-sulphonic acids by photochemical sulphoxidation of paraffinic hydrocarbons. The invention also relates to a device for carrying out this method. The invention relates more particlarly to a method...
12/28/1976
3992274Sensitized production of sulfhydryl compounds using ultra violet radiation
An improved process for production of sulfhydryl-terminated compounds by reaction of an allene compound and hydrogen sulfide is disclosed wherein the reaction is carried out in the presence of ultraviolet light of wavelength substantially above 2600 Angst...
11/16/1976
3992289Method for production of sulfhydryl compounds using ultra-violet radiation
An improved process is disclosed for production of sulfhydryl-terminated compounds by reaction of an allene and hydrogen sulfide initiated with ultraviolet light of wavelength above about 2600 Angstroms to obtain a colorless product of improved purity. Th...
11/16/1976
3979269Method for obtaining tetracyclinehydrochloride
This invention provides method for obtaining tetracycline hydrochloride through interaction of a suspension consisting of tetracycline base in an organic solvent with concentrated hydrochloric acid, wherein the solution containing tetracycline base and hy...
09/07/1976
3965148Perfluoroalkyl alcohols
Perfluoroalkyl group containing alcohols are disclosed with utility as intermediates for the synthesis of oil and water repellent fluorochemicals. The alcohols are obtained by the addition of mercaptoalcohols to perfluoroalkyl group containing esters of f...
06/22/1976
1    
 
Sign InRegister
Username  
Password   
forgot password?