...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.
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 |
| 5770657 | Curing agents for aqueous epoxy resins Provided are epoxy curing agents comprising the reaction product of reactants consisting essentially of a mono-alkylene polyamine having less than about 12 carbon atoms, an alicyclic diamine in an amount of greater than about 10% of the amine equivalents ... | 06/23/1998 |
| 5763506 | Self-dispersing curable epoxy resins, dispersions made therewith, and coating compositions made therefrom A self-dispersing curable epoxy composition is prepared upon contacting (a) 1.0 reactive equivalents of an epoxy resin, (b) from about 0.01 to 1.0 reactive equivalents of a polyhydric phenol, and (c) between 0.005 and 0.025 reactive equivalents of an amin... | 06/09/1998 |
| 5756742 | Polymerizable compounds Polymerizable compounds based on N-acylamido-piperazines are provided. Such compounds have the formula: ##STR1## wherein: a, b, c and d are independently 0 or 1 and the sum of a, b, c and d is at least 3. R1, R2, and R3 | 05/26/1998 |
| 5741824 | Acoustically active plastisols The invention relates to acoustically active sprayable plastisol compositions based on styrene copolymers and/or alkyl methacrylate homopolymers and/or copolymers of methyl methacrylate which, in addition to the favorable abrasion properties and corrosion... | 04/21/1998 |
| 5728404 | Virucidal disinfectant Methods of virucidal disinfection with virucidal disinfectants containing an active quantity of salts of metals of the alkaline earth metals, alkali metals, earth metals and/or metals of the first, second or third secondary group of the periodic system of... | 03/17/1998 |
| 5719202 | Polymerizable N,N'-substituted piperazine acrylamide compounds Polymerizable compounds based on N-acylamido-piperazines are provided. Such compounds have the formula: ##STR1## wherein: R1, R2, and R3 are each independently selected from the group consisting of hydrogen and lower ... | 02/17/1998 |
| 5714526 | Method of preparing resin/pigment compositions for printing inks A method of preparing a pigment dispersion useful in the preparation of printing inks is provided. Said method comprises dispersing a pigment in an aqueous medium further comprised of a dispersing binder resin composition, said aqueous medium being essent... | 02/03/1998 |
| 5709739 | Release agents for hydraulic binders A composition useful as a release agent for hydraulic binders is provided. The composition comprises water, an oil component comprising a water-immiscible monohydric alcohol component liquid at temperatures of 5° to 15° C. and selected from the group co... | 01/20/1998 |
| 5672199 | Water-containing antislip composition A composition useful as an antislip for articles with plastic surfaces is provided. Said composition typically comprises from 35 to 45% by weight of a rosin or derivative thereof, preferably a water-soluble, saponified rosin, from 5 to 10% by weight of an... | 09/30/1997 |
| 5670669 | Recovery of tocopherols Starting from a mixture containing tocopherol, fats and/or fat derivatives, more particularly fatty acids, and optionally sterol and/or sterol derivatives, the free fatty acids present in the mixture are esterified with an alcohol. The mixture is then tra... | 09/23/1997 |
| 5665237 | Method for separating materials A process for the separation of naphthalenesulfonate-based carbonyl condensates from water is provided. The process comprises contacting a mixture comprised of water and a naphthalenesulfonate-based carbonyl condensate (preferably a material selected from... | 09/09/1997 |
| 5652323 | Self-dispersing curable epoxy resins, dispersions made therewith, and coating compositions made therefrom A self-dispersing curable epoxy composition is prepared upon contacting (a) 1.0 reactive equivalents of an epoxy resin, (b) from about 0.01 to 1.0 reactive equivalents of a polyhydric phenol, and (c) between 0.005 and 0.025 reactive equivalents of an amin... | 07/29/1997 |
| 5648421 | Isocyanate/polyol casting resin A composition useful as a casting resin is provided. The composition comprises a polyol, a polyisocyanate, a catalyst, and a suspension aid, and said catalyst and said suspension aid are present in the casting resin in such concentrations that, within 10 ... | 07/15/1997 |
| 5645763 | Use of liquid esters as solvents for isocyanates The use of esters--liquid at room temperature--of C6-22 fatty acids with monohydric alcohols and/or of C6-22 fatty alcohols with monocarboxylic acids as solvents for isocyanates and/or isocyanurates is provided. Because the ester red... | 07/08/1997 |
| 5643976 | Self-dispersing curable epoxy resin dispersions and coating compositions made therefrom There is disclosed a self-dispersing curable epoxy resin composition comprising the addition product of reactants comprising (a) 1.0 reactive equivalent of an epoxy resin, (b) from about 0.40 to 0.95 reactive equivalents of a polyhydric phenol, and (c) fr... | 07/01/1997 |
| 5633305 | Coating composition with heat-curing film formation and its use Coating compositions based on waxes, wax-like compounds, drying oils or alkyd resins are improved in their running behavior by the addition of additives which gel at elevated temperature. Other positive properties of the coating compositions, such as for ... | 05/27/1997 |
| 5627289 | Recovery of tocopherol and sterol from tocopherol and sterol containing mixtures of fats and fat derivatives A process is provided for simultaneously recovering tocopherol and sterol from a mixture containing tocopherol, fats and/or fat derivatives, more particularly fatty acids, and sterol and/or sterol derivatives, more particularly from a steamer distillate o... | 05/06/1997 |
| 5623046 | Self-dispersing curable epoxy resins, dispersions made therewith, and coating compositions made therefrom A self-dispersing curable epoxy composition is prepared upon contacting (a) 1.0 reactive equivalents of an epoxy resin, (b) between 0.005 and 0.5 reactive equivalents of an amine-epoxy adduct, and optionally (c) from about 0.01 to 1.0 reactive equivalents... | 04/22/1997 |
| 5616735 | Recovery of tocopherols Starting from a mixture containing tocopherol, fats and/or fat derivatives, more particularly fatty acids, and optionally sterol and/or sterol derivatives, the free fatty acids present in the mixture are esterified with an alcohol. The mixture is then tra... | 04/01/1997 |
| 5616364 | Aqueous compositions useful as printing vehicles Provided are aqueous dispersion consisting essentially of high-molecular weight polymer prepared by aqueous suspension polymerizing a blend of monomers, said blend consisting essentially of: (i) a plasticizing amount by weight of a monomer selected from t... | 04/01/1997 |
| 5604269 | Self-dispersing curable epoxy resins, dispersions made therewith, and coating compositions made therefrom A self-dispersing curable epoxy composition is prepared upon contacting (a) 1.0 reactive equivalents of an epoxy resin, (b) between 0.005 and 0.5 reactive equivalents of an amine-epoxy adduct, and optionally (c) from about 0.01 to 1.0 reactive equivalents... | 02/18/1997 |
| 5589230 | Polymerizable, curable molding composition and a molding or coating process using this molding composition A polymerizable curable molding composition comprising (A) 100 parts by weight of an unsaturated epoxyester resin with an acid value below 3.0, (B) 10 to 40 parts by weight of a polymerizable monomer selected from the group consisting of phenoxyethyl acry... | 12/31/1996 |
| 5583167 | Curing agents for aqueous epoxy resins Provided are epoxy curing agents comprising the reaction product of reactants consisting essentially of an alkylene polyamine having less than about 12 carbon atoms, an aromatic mono-glycidyl ether having less than about 18 carbon atoms, and a diglycidyl ... | 12/10/1996 |
| 5569694 | Garnet-containing stabilizer mixtures for polymers Stabilizer mixture for polymers based on halogen-containing vinyl monomers are provided. The stabilizers contain: a) calcium soaps of C8-32 fatty acids, b) zinc soaps of C8-32 fatty acids, and c) garnets corresponding to formula (I): ##EQ... | 10/29/1996 |
| 5563206 | Polyurethane dispersions and their use as binders in stoving lacquers Aqueous polyurethane dispersions prepared in several stages by reacting A) aliphatic and/or aromatic di- and/or tri-isocyanates with B1) polyol mixtures containing dimer diols of 25 to 100% by weight of dimer diols and 0 to 75% by weight of other hydrophobic diols ... | 10/08/1996 |
| 5554709 | Moisture-curing alkoxysilane-terminated polyurethanes Described are moisture-curing alkoxysilane-terminated polyurethanes which can be obtained by reacting polyurethane prepolymers with a mean NCO functionality of at least 1 but less than 2 with special sulfur-free alkoxysilanes, reacting with substantially ... | 09/10/1996 |
| 5516850 | Ionic polymers The invention relates to ionic polymers obtained by reaction of carboxyfunctional fat- and oil-based starting materials with salts of polyvalent ions. They may be used as sealants, coatings, adhesives and as additives for plastic formulations and for mort... | 05/14/1996 |
| 5512655 | Dihydroxyfatty acids as structural elements for polyurethanes A process for the production of carboxyfunctional polyurethane from dihydroxyfatty acids and/or dihydroxypolyfatty acids as isocyanate-reactive compounds bearing an ionizable group is provided. The dihydroxycarboxylic acids and/or dihydroxypolyfatty acids... | 04/30/1996 |
| 5508373 | Curing agents for epoxy resins based on 1,2-diaminocyclohexane A method of curing an epoxy resin comprising mixing an epoxy resin with a curing agent is provided. The curing agent is selected from the group consisting of (i) a mixture consisting essentially of 1,2-diaminocyclohexane and an aliphatic polyamine (prefer... | 04/16/1996 |
| 5500475 | Polyurethane-based thickeners Provided are thickeners based on an aqueous preparation of nonionic, water-dispersible or water-soluble polyurethanes, to their production and to their use. The nonionic, water-dispersible or water-soluble polyurethanes are obtainable by reaction of polyf... | 03/19/1996 |
| 5496881 | Composition for forming fireproof coatings and caulking and a method of use The invention is an aqueous composition for forming fireproof coatings and caulking. The composition is halogen, asbestos and antimony-free. The composition contains 5-20% by weight of a binder resin; 10-60% by weight of a particulate flameproofing agent;... | 03/05/1996 |
| 5491189 | Aqueous vulcanizing adhesive The adhesive strength of an aqueous binder dispersion consisting of: a halogenated copolymer which, in addition to other components, contains an alkylation-active monoalkenylaromatic alkyl halide; polyfunctional aromatic nitroso compounds; pigments; carbo... | 02/13/1996 |
| 5490943 | Spinning preparations in the form of aqueous emulsions or aqueous solutions containing polymers The invention relates to spinning finishes in the form of aqueous emulsions or aqueous solutions containing water-soluble polymer compounds having weight average molecular weights of more than 106.... | 02/13/1996 |
| 5478427 | New reactive contact adhesives, a process for their production and their use New contact adhesives which are designed as multifunctional contact reactive adhesives and which may be used in a multistage curing process, for example for bonding wood, plastic moldings, metals and the like, are provided. One of the functional substitue... | 12/26/1995 |
| 5455066 | Water-containing adhesive based on casein An adhesive based on casein, water-soluble extenders, natural or synthetic resin acids, resin alcohols or resin esters, and an alcohol is provided. The adhesive has specific amounts of these ingredients which leads to a viscosity of the adhesive which is ... | 10/03/1995 |
| 5444127 | Tertiary amine derivatives as components of polymer forming systems Curable systems for the preparation of polymeric products in which the curable system comprises an epoxy resin or an isocyanate, wherein the system contains a condensation reaction product of a) a polyamine having only one primary amino group and only one tert... | 08/22/1995 |
| 5435845 | Glucoheptonate compositions and methods Compositions and methods relating to cementitious compositions are provided. The use of a glucoheptonate in the alpha form to prolong the workability of cementitious compositions is provided. The alpha form of glucoheptonate (found to have properties supe... | 07/25/1995 |
| 5433775 | Adhesive stick based on starch ethers The invention relates to a dimensionally stable, soft-rubbing adhesive stick consisting of a water-based preparation of starch derivatives and a soap gel as the shaping gel-forming component and, optionally, other auxiliaries. To obtain an adhesive stick ... | 07/18/1995 |
| 5434301 | Methods for recovery of acids A process for recovering sulfuric acid from a mixture containing sulfuric acid and organic sulfonation products is provided. The process comprises contacting a mixture comprised of sulfuric acid and (i) a naphthalene-based material selected from the group... | 07/18/1995 |
| 5434230 | Composition containing olefinically unsaturated compounds and hydrazones Compositions containing a radical-polymerizable olefinically unsaturated compound and a hydrazone of an aromatic aldehyde or ketone are provided. Also provided are methods for the production of such compositions and methods for the use of such composition... | 07/18/1995 |