Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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.
| Number | Title | Issue Date |
| 7232639 | Monomer having fluorine-containing acetal or ketal structure, polymer thereof, and chemical-amplification-type resist composition as well as process for formation of pattern with use of the same As a polymer exhibiting improved transparency which is suitable for a resist resin used in a chemical-amplification-type resist being applicable for photolithography using exposure light at 180 nm or shorter, this invention provides a polymer comprising a repeating ... | 06/19/2007 |
| 7148385 | Perfluoropolyether primary bromides and lodides A perfluoropolyether and a composition comprising the perfluoropolyether are provided in which the perfluoropolyether comprises at least one bromine or iodine atom at the primary position of the perfluoropolyether. Also provided is a process for producing the compos... | 12/12/2006 |
| 7019177 | Process for preparing fluorohalogenethers A process for preparing (per)fluorohalogenethers having general formula (II): R′CF2OCFA-CA′F2 (II) wherein:— A and A′, equal to or different from each other, are H, Cl or Br bu... | 03/28/2006 |
| 6969776 | Process for producing fluorinated ketone The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process. Namely, it is a process for producing a fluorinated ketone of the follow... | 11/29/2005 |
| 6956138 | Method for producing a fluorine-containing compound The present invention provides a method for obtaining a compound useful as a raw material for various fluororesins in high yield by a short process by using a starting material which is inexpensive and readily available. ... | 10/18/2005 |
| 6803488 | Process for producing fluorinated ketone The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process. Namely, it is a process for producing a fluorinated ketone of the follow... | 10/12/2004 |
| 6747176 | Preparation of 2-chloro-1,1,1-trialkoxyethane 2-Chloro-1,1,1-trialkoxyethane of formula (II): wherein R1 to R3, which may be the same or different, are alkyl, or any two of the alkyl groups taken together form a cyclic group, is prepared by rea... | 06/08/2004 |
| 6653511 | Perfluoropolyether primary bromides and iodides A perfluoropolyether and a composition comprising the perfluoropolyether are provided in which the perfluoropolyether comprises at least one bromine or iodine atom at the primary position of the perfluoropolyether. Also provided is a process for producing... | 11/25/2003 |
| 6303831 | Synthetic method for fluoromethylation of halogenated alcohols A method for fluoromethylation of a halogenated alcohol. The method includes refluxing a halogenated alcohol with a dihalomethane under basic conditions in a first solvent to form a halomethyl ether and fluorinating the halomethyl ether in the presence of... | 10/16/2001 |
| 6184374 | Targeted cytotoxic anthracycline analogs This invention is in the field of the chemistry of targeting anticancer anthracycline derivatives. More particularly, it concerns doxorubicin (DOX) or its daunosamine modified derivatives (DM-DOX) linked covalently to analogs of peptide hormones such as L... | 02/06/2001 |
| 6156937 | Functionalized fluoropolyethers Fluoropolyethers having functional groups, consisting of randomly distributed sequences of perfluoropolyoxyalkylene units selected from: ##STR1## where X is F or CF3 T, T', T"=a perfluoroalkyl group containing from 1 to 3 carbon atoms and ... | 12/05/2000 |
| 6099937 | High molecular weight fractioned lubricant for use with thin film magnetic media Disclosed is a perfluoropolyether (PFPE) lubricant comprising less than about 10 percent PFPE molecules having a molecular weight lower than about 2000 Daltons, and wherein the average molecular weight of the lubricant is greater than about 5000 Daltons. ... | 08/08/2000 |
| 6046367 | Triphenylbis (fluoroalkoxy) phosphoranes and fluorinated ketals Novel triphenylbis(fluoroalkoxy)phosphoranes and a process for their preparation are disclosed. Also disclosed is a process for making fluorinated ketals by reacting phosphoranes with fluorinated ketones.... | 04/04/2000 |
| 5843903 | Targeted cytotoxic anthracycline analogs This invention is in the field of the chemistry of targeting anticancer anthracycline derivatives. More particularly, it concerns doxorubicin (DOX) or its daunosamine modified derivatives (DM-DOX) linked covalently to analogs of peptide hormones such as L... | 12/01/1998 |
| 5777174 | Process for preparing perfluoropolyethers with bromo- or iodo-containing end groups Process for preparing perfluoropolyethers with bromo- or iodo- containing end groups, respectively, by subjecting a peroxidic perfluoropolyether to thermal treatment, in the absence of UV radiation, at temperatures from 120° C. to 280° C. in the presenc... | 07/07/1998 |
| 5719194 | Prevention and treatment of topical viral infections with perfluoropolyethers or compositions thereof Use of perfluoropolyethers with non reactive terminals or compositions thereof for the prevention and/or the treatment of topical vital infections, in particular of Herpes Simplex I and II and of Herpes Zoster.... | 02/17/1998 |
| 5714637 | Functionalized fluoropolyethers Fluoropolyethers having functional groups, consisting of randomly distributed sequences of perfluoropolyoxyalkylene units selected from: ##STR1## and included in one of the following formulas: ##STR2## T'--O--(CF2 CF2 O)p | 02/03/1998 |
| 5672767 | Process for preparing polyether compounds A process for the preparation of a perfluoropolyether having a general formula: ##STR1## as defined hereinbefore, which process includes the direct fluorination with elemental fluorine of a polyether having a general formula: ##STR2## as de... | 09/30/1997 |
| 5631406 | Chemical compounds Dichloroformals of the formula (RCH2 O)2 CCl2 wherein R is --C(NO2)3, --CF(NO2)2, --CF2 (NO.su), --CCl(NO2)2, --C(NO2)2 CH3 | 05/20/1997 |
| 5557012 | Fluorination of acetals, ketals and orthoesters This invention pertains to perfluoropolyethers and perhalogenated chlorofluoroether polymers that can be prepared by fluorinating polymers made by the polymerization of acetals, ketals, polyacetals, polyketals and orthoesters with elemental fluorine.... | 09/17/1996 |
| 5543567 | Fluorination of acetals, ketals and orthoesters This invention pertains to perfluoropolyethers and perhalogenated chlorofluoroether polymers that can be prepared by fluorinating polymers made by the polymerization of acetals, ketals, polyacetals, polyketals and orthoesters with elemental fluorine.... | 08/06/1996 |
| 5523496 | Fluorination of acetals, ketals and orthoesters Perfluoropolyethers and perhalogenated chlorofluoroether polymers are disclosed that can be prepared by fluorinating polymers made by the polymerization of acetals, ketals, polyacetals, polyketals and orthoesters with elemental fluorine.... | 06/04/1996 |
| 5476918 | Fluorine-containing compounds having polyacetalic structure, and process for preparing them 1) New fluorine-containing compounds having polyacetalic structure, of general formula: (I)[Rfm --CH2 O(CH2 O)c --CH2 ]n where: Rf=a perfluorooxyalkylene chain having Mn from 500 to 5,000; m=4-25; c=... | 12/19/1995 |
| 5449837 | Fluorinated methyl ethers A process is disclosed for producing a fluorinated ether of the formula R2 CHOCF2 A, where A is Cl or F, and each R is H, (CF2)n Cl, (CF2)n F or (CF2)n H (n is an inte... | 09/12/1995 |
| 5446206 | Process for preparing controlled molecular weight perfluoropolyethers having perfluoroalkyl or perfluorochloroalkyl end groups This invention relates to perfluoropolyethers having neutral end groups by a process based on the photooxidation of C3 F6 and/or C2 F4, thereby obtaining controlled molecular weight products having perfluoroalky... | 08/29/1995 |
| 5446205 | Functionalized fluoropolyethers Fluoropolyethers having functional groups, consisting of randomly distributed sequences of perfluoropolyoxyalkylene units selected from: ##STR1## and included in one of the following formulas: ##STR2## where X is F or CF3 T, T', T"=a ... | 08/29/1995 |
| 5382704 | Fluorinated methyl ethers A process is disclosed for producing a fluorinated ether of the formula R2 CHOCF2 A, where A is Cl or F, and each R is H, (CF2)n Cl, (CF2)n F or (CF2)n H (n is an inte... | 01/17/1995 |
| 5362919 | Direct fluorination process for making perfluorinated organic substances A liquid phase process for making perfluorinated organic substances which comprises directly contacting in a temperature-controlled reactor a diluted solution or dispersion of a perfluorinateable, organic substance in a liquid, inert medium with a stoichi... | 11/08/1994 |
| 5350878 | Fluorinated compounds containing hetero atoms and polymers thereof This invention provides 1) novel reactive fluorinated compounds derived from a specified class of telomers or cotelomers of fluoroolefins; and 2) stable products and stable polymers thereof obtained by reaction or polycondensation of the novel reactive fl... | 09/27/1994 |
| 5319147 | Process for the neutralization of perfluoropolyoxyalkylenes Perfluoropolyoxyalkylenes containing acid and/or ketonic groups are neutralized by reacting same in the liquid phase with elemental fluorine at temperatures of from -20° to +150° C. in the presence of a supported catalyst consisting of fluorides of Ag, ... | 06/07/1994 |
| 5304687 | Morpholinyl derivatives of doxorubicin and process for their preparation Morpholinyl derivatives of doxorubicin having the general formula A: ##STR1## in which X represents a linear or branched C2 -C6 alkyl group or a benzyl group --CH2 C6 H5 and which have (S) or (R) ... | 04/19/1994 |
| 5300683 | Fluorination of acetals, ketals and orthoesters This invention pertains to perfluoropolyethers and perhalogenated chlorofluoroether polymers that can be prepared by fluorinating polymers made by the polymerization of acetals, ketals, polyacetals, polyketals and orthoesters with elemental fluorine.... | 04/05/1994 |
| 5292961 | Process for the preparation of halogenated polyethers Process for the preparation of halogenated polyethers of the general formula: ##STR1## wherein X=Cl or F, RF and R'F either equal to or different from each other, are selected from fluorinated alkyl radicals with from 1 to 20 ... | 03/08/1994 |
| 5290912 | Process for producing a polyoxyalkylene compound The present invention has an object of producing a polyoxyalkylene compound by ring-opening polymerization of an alkylene oxide to a certain specific highly hydrophobic initiator. The present invention provides a process for producing a polyoxyalkylene co... | 03/01/1994 |
| 5220076 | Perfluoropolyethers and processes for their preparation The invention relates to new peroxide perfluoropolyethers having formula: ##STR1## wherein: A and B are end groups, X represents a (R'O)m R" group where R' is selected from the class consisting of --CF2 --, --CF2 --CF... | 06/15/1993 |
| 5214214 | Perfluoro branched alkyl ethers and emulsions There is provided a novel perfluorochemical represented by the formula, ##STR1## wherein RF is a perfluoroalkyl group, a perfluoro alkoxyalkyl group or a perfluoroalkyloxy group, X and X' are same as or different from each other and are a ... | 05/25/1993 |
| 5202501 | Perfluoropolyethers Perfluoropolyethers containing high concentrations of difluoromethylene oxide units in the polymer chain are disclosed.... | 04/13/1993 |
| 5202480 | Fluorination of acetals, ketals and orthoesters This invention pertains to perfluoropolyethers and perhalogenated chlorofluoroether polymers that can be prepared by fluorinating polymers made by the polymerization of acetals, ketals, polyacetals, polyketals and orthoesters with elemental fluorine.... | 04/13/1993 |
| 5164517 | Process for preparing fluoropolyethers and perfluoropolyethers having neutral or functional end groups and a controlled molecular weight This invention relates to a process for preparing fluoropolyethers and perfluoropolyethers having neutral and/or functional end groups and a lower molecular weight by a selective catalytic cleavage of the corresponding higher molecular weight fluoropolyet... | 11/17/1992 |
| 5155281 | Preparing dichloroformals A method of preparing dichloroformals of the formula (RCH2 O)2 CCl2 by reaction of one mole of a thionocarbonate of the formula (RCH2 O)2 C.dbd.S with two moles of benzenesulfenyl chloride, chlorobenzenesulfenyl chl... | 10/13/1992 |
