Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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 |
| 4112019 | Stabilized polymerizable polyester compositions Compositions stabilized against premature polymerization are disclosed. These compositions contain (a) a vinyl or vinylidene monomer capable of free radical polymerization, and (b) a polymerization inhibitor having the following general formula: ##STR1## ... | 09/05/1978 |
| 4111959 | 15,16-Dioxy prostenoic acids and esters and intermediates in their preparation This disclosure describes novel 15,16-dioxy prostenoic acids and esters useful as bronchodilators, anti-inflammatory agents, hypotensives and gastric acid secretion inhibitors.... | 09/05/1978 |
| 4105792 | Prostane dervatives Prostan-1-ol esters and intermediates for their preparation are described; the former compounds exhibit improved organ specificity and a longer duration of activity at lower dosages than the corresponding non-esterified prostaglandins and are useful, inte... | 08/08/1978 |
| 4099018 | Method for the oxidation of a conjugated diolefin A conjugated diolefin is reacted with at least one compound selected from the group consisting of a carboxylic acid and a carboxylic acid anhydride in the presence of oxygen and a catalyst comprising a lead compound.... | 07/04/1978 |
| 4097678 | Ɗ9 (11) -5-D-homo-20-keto steroids 3-Hydroxy and 3-acyloxy- Ɗ9(11) -5-D-homo-20-ketopregnenes of the formula ##STR1## wherein R is hydrogen or acyl, R1 is hydrogen or methyl and R2 is methyl or ethyl, are produced by esterifying a... | 06/27/1978 |
| 4095037 | Method for the oxidation of a conjugated diolefin A conjugated diolefin is reacted with a carboxylic acid, a carboxylic acid anhydride, or a mixture thereof, in the presence of oxygen and a catalyst comprising a compound of bismuth, an alkali metal compound and a source of nitrate ion.... | 06/13/1978 |
| 4093815 | Method for the oxidation of a conjugated diolefin A conjugated diolefin is reacted with at least one compound selected from the group consisting of a carboxylic acid and a carboxylic acid anhydride in the presence of oxygen and a catalyst comprising a rare earth metal compound, an alkali metal compound a... | 06/06/1978 |
| 4088820 | Transesterification of olefins Olefins may be esterified by reaction with esters of saturated alcohols containing at least two carbon atoms in the presence of a catalytic amount of a tin halide catalyst, the reaction being effected at temperatures ranging from about 0° to about 150° ... | 05/09/1978 |
| 4087475 | Carbonyl fluorination process A process for the production of fluorinated organic compounds wherein a carbonyl containing organic compound and adducts of sulfur trioxide or sulfur dioxide with metal fluorides are combined.... | 05/02/1978 |
| 4075412 | Processes for preparation of diacyloxy olefins Diacyloxy olefins are prepared by the reaction of a conjugated diolefin with a carboxylic acid in the presence of free oxygen and a catalyst system consisting essentially of an indium compound, a halide source and an alkali metal compound.... | 02/21/1978 |
| 4073876 | Preparation of glycol esters In the preparation of glycol esters by the oxidation of an olefin in the presence of a catalyst comprising tellurium, wherein the accumulation of foreign metals in association with the tellurium catalyst component has an adverse effect upon the reaction, ... | 02/14/1978 |
| 4070378 | Synthesis cyclopentanol Process for synthesizing the lactone, (dl) 3,3a beta-4,5-6,6a beta-hexahydro-4beta(3-hydroxyl-1-trans-octenyl)-5alpha-hydroxy-2-oxo-2H-c yclopenta[b]furan, a known intermediate for producing prostaglandin E2 and F2 and a proces... | 01/24/1978 |
| 4069242 | Process for preparation of ଲ-hydroxy esters by reaction of organic carboxylic acids and vicinal epoxides A synergistic catalytic effect is realized in the esterification reaction between an organic carboxylic acid and a vicinal epoxide by using a catalyst system comprising: (a) a compound containing an amino and/or ammonium nitrogen atom, in combination with... | 01/17/1978 |
| 4069381 | Method for preparing glycol esters An improved method for making glycol monoesters and diesters of carboxylic acid by the reaction of an olefin and oxygen in the presence of a carboxylic acid and a catalyst, wherein said catalyst includes a compound of a metal of groups IVB - VIIB having a... | 01/17/1978 |
| 4069385 | Method for the preparation of optically active allylic esters In the preparation of olefin derivatives having an ester group at the allylic position (hereinafter referred to as "allylic ester(s)") which comprises reacting an olefin having at least one hydrogen atom at the allylic position and which will produce an a... | 01/17/1978 |
| 4059603 | Esterification of carboxylic acids by contact with a phosphonium salt The amidation and esterification of carboxylic acids with amines and hydroxyl group-containing compounds, respectively, are effected without incurring the drawbacks of reaction equilibrium by the reaction of the reactants, one of which has been activated ... | 11/22/1977 |
| 4057516 | Preparing perfumed compositions containing 8-allyl-8-hydroxytricyclo[5,2.1.02,6 ]decane alone or combined with O-hydroxybenzyl ethyl ether Perfume compositions, perfumed materials and articles and a process for preparing perfume compositions, perfumed materials and articles which includes the steps of adding perfume components usual for this purpose and additionally at least one compound rem... | 11/08/1977 |
| 4055564 | Novel prostaglandin intermediates and process for the production thereof Novel prostaglandin intermediates and process for the production thereof. Compounds, and process for the production thereof, useful in the production of (dl)-[1-hydroxy-3ଲ-(3S-tetrahydropyranyloxy-trans-1-octenyl)-4 -tetrahydropyra... | 10/25/1977 |
| 4055531 | PVC Plasticized with tetracarboxylates Anhydrides and esters of alkyl or cycloalkyl tetracarboxylic acids and polyvinyl chloride plastic compositions containing said esters as plasticizers.... | 10/25/1977 |
| 4052552 | Thromboxane B analogs The present specification provides novel intermediates and novel processes for the synthesis of various side chain and skeletal analogs of Thromboxane B2 (11ଲ-homo-11a-oxa-PGF2). These analogs are particularly and especi... | 10/04/1977 |
| 4052423 | Synthesis of ,ଲ-unsaturated carboxylic acids and esters ,ଲ-Unsaturated carboxylic acids and esters have a wide variety of chemical uses. The invention is a method of synthesizing ,ଲ-unsaturated carboxylic acids and esters which, with regard to the esters, comprises reacting a vinylmer... | 10/04/1977 |
| 4049731 | Stabilized polymerizable compositions Compositions stabilized against premature polymerization are disclosed. These compositions contain A. a vinyl or vinylidene monomer capable of free radical polymerization, and B. a polymerization inhibitor having the following general formula: ##STR1## ... | 09/20/1977 |
| 4048147 | Carboxylic acid of cyclopentadiene derivative, salt thereof, or ester thereof and process for producing these compositions A novel compound represented by the formula, ##STR1## WHEREIN R is a hydrogen or an alkyl group having 1 to 3 carbon atoms, said four R's being the same or different; R1 is hydrogen, an alkali metal, an ammonium group, a mono-to tetra-hydr... | 09/13/1977 |
| 4045574 | D-Homo-20-ketopregnanes D-homo-20-ketopregnanes of the formula ##STR1## wherein R1 is oxygen, ##STR2## in which R5 is hydrogen or lower acyl; R2 is hydrogen or methyl; R3 is oxygen, ##STR3## or two hydrogen atoms; R... | 08/30/1977 |
| 4045577 | Valuable medicinial prostaglandin compounds prepared from material isolated from the sea Novel compounds of the formula ##STR1## wherein R1 is hydrogen or alkyl, R2 is hydrogen or acyl, the diastereomers and the pharmaceutically acceptable salts. The compounds are prepared by the hydrogenation and epimerization of n... | 08/30/1977 |
| 4044041 | Preparation of esters of unsaturated alcohols Esters of monounsaturated alcohols are prepared by reacting a carboxylic acid with a conjugated diene in the absence of oxygen, employing a catalyst system including copper ions, alkali metal ions, and halide ions.... | 08/23/1977 |
| 4038299 | 2-Substituted-5-oxo-5H-dibenzo [a,d] -cycloheptene esters 2-Substituted-5-oxo-5H-dibenzo [a,d] cycloheptenes represented by the following formula: ##STR1## where one of R2 and R3 is hydrogen, and the other is hydrogen, methyl, or ethyl, or together R2 and R3 are m... | 07/26/1977 |
| 4036874 | D-homopregnanes D-homosteroids of the formula ##STR1## wherein R6 is hydrogen, fluorine, chlorine or methyl; R9 is hydrogen, fluorine, chlorine or bromine; R17 and R21 each independently are hydroxy or acyloxy, and U repre... | 07/19/1977 |
| 4035405 | Novel synthesis for preparing the hydrochloride salt of selected catecholamine derivatives Compounds of the formula: ##STR1## wherein R represents a straight or branched C1 -C5 alkyl group; and R1 in each occurrence represents an acyl member which is alkanoyl having 1-22 carbon atoms, alkenoyl having one or... | 07/12/1977 |
| 4033994 | Substituted p-menthanes Compounds are disclosed having a physiological cooling action on the skin. The compositions contain, as the effective ingredient, certain esters of p-menthane 3-carboxylic acid.... | 07/05/1977 |
| 4029692 | Steroid carboxylic acids and derivatives The present disclosure relates to steroid carboxylic acids and derivatives thereof. More particularly, the disclosure is concerned with D-homosteroid carboxylic acids and their derivatives, a process for the preparation thereof and pharmaceutical composit... | 06/14/1977 |
| 4028400 | D-homosteroids The present invention relates to steroids. More particularly, the invention is concerned with D-homosteroids, a process for the manufacture thereof and pharmaceutical preparations containing same.... | 06/07/1977 |
| 4026924 | Process of preparing diacyloxy olefins Diacyloxy olefins are prepared by the reaction of a conjugated diolefin with a carboxylic acid in the presence of free oxygen and a catalyst system consisting essentially of an alkali metal compound and a compound of gold or silver.... | 05/31/1977 |
| 4026922 | D-Homo-pregnene steroids The present disclosure relates to novel D-homo-pregnene steroids useful as progestational agents.... | 05/31/1977 |
| 4026923 | D-Homosteroids A novel class of D-homosteroids is disclosed. These compounds have potent endocrinal activity, particularly as anti-inflammatory agents.... | 05/31/1977 |
| 4025540 | Process for the production of pure carboxylic acid-1-monoglycerides Very pure carboxylic acid-1-monoglycerides are prepared by reacting a carboxylic acid with glycidol at a temperature of 80° to 200° C. in the presence of a basic alkali metal or alkaline earth metal compound as a catalyst in the presence of an inert sol... | 05/24/1977 |
| 4022808 | Process for the production of alkylene glycol ether of organic carboxylic acid A process for the production of an alkylene glycol ether ester of organic acid which comprises reacting an alkylene oxide and an ester of organic carboxylic acid by using a catalytic amount of a basic catalyst selected from the group of halogenides consis... | 05/10/1977 |
| 4014922 | Organic compositions Cyclopropyl substituted esters, syntheses thereof, compositions thereof, and use for the control of mites and ticks.... | 03/29/1977 |
| 4011278 | Conversion of polar compounds using a ZSM-5 zeolite catalyst Conversion, e.g. dehydration, of aliphatic organic oxygenates having up to about 6 carbon atoms by contact with a crystalline aluminosilicate zeolite, preferably ZSM-5, having a silica to alumina ratio substantially greater than 10, at a temperature of ab... | 03/08/1977 |
| 4008277 | Benzo-bicyclononene derivatives The present invention relates to novel biologically active tricyclic compounds of the general formula: ##STR1## and salts thereof, in which R1 and R2 stand for hydrogen, alkyl or alkenyl, an optionally substituted aralkyl group ... | 02/15/1977 |
