...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.
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| Number | Title | Issue Date |
| 7918932 | Production of inorganic doped-zircon pigments A process for producing an inorganic doped-zircon pigment includes calcining a base mixture comprising raw plasma-dissociated zircon, a chromophore, and at least one mineralizer, to produce a raw pigment. The raw pigment is refined to obtain an inorganic doped-zirco... | 04/05/2011 |
| 7837782 | Yellow inorganic pigments and process for preparing same The present invention provides yellow inorganic pigments comprising praseodymium, oxides of transition metals selected from molybdenum, titanium, zirconium and combinations thereof, essentially molybdenum, optionally with alkaline earth metal (A) and the said yellow... | 11/23/2010 |
| 7316741 | Ceramic colorants in the form of nanometric suspensions Described herein are ceramic colorants consisting of suspensions of particles of nanometric dimensions, their production and use. ... | 01/08/2008 |
| 7250118 | Agglomerated nanoparticles having a rutile-like crystalline phase Agglomerated nanoparticles including Ti/Sb mixed oxide nanoparticles having a rutile-like crystalline phase content of at least 20 weight percent, wherein the nanoparticles have at least one organic moiety bound to the nanoparticle surface, and wherein the weight ra... | 07/31/2007 |
| 7166263 | Ceria-based mixed-metal oxide structure, including method of making and use A homogeneous ceria-based mixed-metal oxide, useful as a catalyst support, a co-catalyst and/or a getter has a relatively large surface area per weight, typically exceeding 150 m2/g, a structure of nanocrystallites having diameters of less than 4 nm, and ... | 01/23/2007 |
| 6966998 | Security printing A method of providing covert security features for documents such as vouchers, packaged goods and banknotes in which the document is provided with a dopant. The dopant consisting of a material which can be identified by examination of its response to visible wavelen... | 11/22/2005 |
| 6932848 | High performance fuel processing system for fuel cell power plant A fuel processing system (FPS) (110) is provided for a fuel cell power plant (115) having a fuel cell stack assembly (CSA) (56). A water gas shift (WGS) reaction section (12, 120) of the FPS (110) reduces the concentration of carbo... | 08/23/2005 |
| 6652829 | Continuous calcination of mixed metal oxides A method for continuously calcinating product to form mixed metal oxide powders comprising providing a continuously operated indirectly heated rotary furnace having a heating cavity, introducing raw feedstock including product to be calcined into the heat... | 11/25/2003 |
| 6582506 | Pigment flakes Pigment flakes having cores preferably composed of resins, polymers, thermoplastics, and/or thermosets with colorant (pigment and/or dyes) deposited thereon, coating applications thereof, and a method for making pigment flakes which includes providing a c... | 06/24/2003 |
| 6503468 | Method of preparing silver-doped vanadium pentoxide antistatic agent A method of doping vanadium pentoxide with silver comprising the steps of: providing vanadium pentoxide gel providing stable colloidal silver and combining the vanadium pentoxide gel and the colloidal silver at room temperature for a period sufficient for... | 01/07/2003 |
| 6444025 | Red-tinged bismuth vanadate pigments Zirconium-containing, red-tinged bismuth vanadate pigments of general formula I, BiVb Ox.Ca.sub.c (MoO4)d.Zr.sub.e Sif Oy.F.sub.z I wherein the variables have the following meanings: b 0.8 to 1... | 09/03/2002 |
| 6387498 | Bright metal flake based pigments A flake-based pigment is provided having improved specular reflectance characteristics in the visible wavelength range. The flake-based pigment has a plurality of core flake sections each formed of a central reflector layer and dielectric support layers o... | 05/14/2002 |
| 6383638 | Bright metal flake based pigments A flake-based pigment is provided having improved specular reflectance characteristics in the visible wavelength range. The flake-based pigment has a plurality of core flake sections each formed of a central reflector layer and dielectric support layers o... | 05/07/2002 |
| 6174359 | Ceramic decoration coloring substances with increased color saturation comprising zirconium pigments, process for their production and their use Ceramic decoration coloring substances substantially containing a zirconium pigment of the host lattice or inclusion type and a glass flux at a pigment volume concentration (PVC) of at least 30% have an increased color saturation C* if the glass flux comp... | 01/16/2001 |
| 6080232 | Spherical color pigments, process for their production and use thereof The invention relates to spherical colored pigments having an average particle diameter of less than 10 μm on the basis of an oxide, a mixed oxide or a silicate. The pigments are obtainable by means of spray-pyrolysis technology: a solution containing ox... | 06/27/2000 |
| 6063182 | Stir-in pigment compositions A stir-in pigment composition for coloring high-molecular-weight material, particularly coatings and ink systems, comprises 85 to 99.5 parts by weight of a pigment and 0.5 to 15 parts by weight of an additive comprising a vinylpyrrolidone polymer or copol... | 05/16/2000 |
| 6022404 | Surface-modified, pyrogenically produced mixed oxides, method of their production and use Surface-modified, pyrogenically produced mixed oxides which contain two or more components of the series SiO2, Al2 O3, TiO2, ZrO2, Fe2 O3, Nb2 O5, V2 ... | 02/08/2000 |
| 5961710 | Inorganic pigment granules process for their production and their use The invention relates to granules of inorganic pigments, a process for their production using several auxiliary substances by compacting and their use in many technical fields.... | 10/05/1999 |
| 5958125 | Goniochromatic luster pigments based on transparent, nonmetallic, platelet-shaped substrates Goniochromatic luster pigments based on multiply coated, high refractive, nonmetallic, platelet-shaped substrates which are at least partially transparent to visible light, comprising at least one layer packet of A) a colorless coating having a refractive inde... | 09/28/1999 |
| 5908499 | Colored powders prepared by a combination of two thermal, chemical or irradiation processes Disclosed is a system of natural colors consisting of thousands of colored powders of mineral origin and of materials in or on which pigments have been applied and, afterwards, submitted to at least one thermal treatment and/or irradiation. These natural ... | 06/01/1999 |
| 5891237 | Production of free flowing spheres using partially neutralized fatty acid Spherical agglomerates of finely divided material such as inorganic oxides are prepared by admixing a slurry of finely divided material with a solution of a partially neutralised carboxylic acid.... | 04/06/1999 |
| 5766335 | Colored luster pigments The invention relates to colored luster pigments consisting of a transparent or metallic reflecting core, of a coating consisting of at least one silicon oxide of the composition SiO0.25 to SiO0.95 and of further optional coatings, t... | 06/16/1998 |
| 5766336 | Colored pigments based on oxide-nitrides, the preparation and use thereof Colored pigments are provided from the green-yellow to red spectrum based on oxide-nitrides with two or three different cations Q, R and S in the crystal lattice, wherein the nitrogen to oxygen atomic ratio is determinative for the color. These pigments c... | 06/16/1998 |
| 5688316 | Pigmented substrates comprising terbium compound colorants Colored/pigmented substrates, for example plastics, paints, varnishes, ceramics, glazes, papers, inks, cosmetics, dyes, binders, coatings, rubbers, etc., include an effective coloration-imparting amount of at least one colorant terbium compound having the... | 11/18/1997 |
| 5560772 | Yellow/orange pigments comprising zirconium oxide and cerium, praseodymium and/or terbium values Nontoxic yellow/orange pigment compositions, well suited for the coloration of a wide variety of substrates, for example paints, varnishes, plastics, ceramics, etc., comprise a major amount of a zirconium oxide and an additive amount of cerium, praseodymi... | 10/01/1996 |
| 5501733 | Rare earth metal sulfide pigments comprising fluorine values Fluoridated particulates, especially external face surface-fluoridated particulates of the rare earth metal sesquisulfide pigments/colorants, advantageously encapsulated within a coating layer of at least one transparent oxide or hydrate thereof, e.g., si... | 03/26/1996 |
| 5433778 | Negative thermal expansion material Compounds that satisfy the general formula A1-Y4+ AY1+ AY3+ V2-X EX O7 exhibit isotropic NTE behavior above a temperature of about 100° C. Y is from about 0.0 t... | 07/18/1995 |
| 5401309 | Rare earth metal sulfide pigment compositions Novel colorant/pigment compositions, prepared via precipitation technique and well suited for the coloration of a wide variety of materials and substrates, e.g., plastics, paints and inks, ceramics, cosmetics, etc., comprise composite core/sheath particul... | 03/28/1995 |
| 5389402 | Method of producing decorations which are color-stable in a porcelain firing and a pigment composition suitable therefor A method for producing decorations which are color-stable in a porcelain firing (glost firing), and a pigment composition suitable for this method, is disclosed. Inclusion pigments based on heavy-metal sulfides and selenides in an oxidic or silicate casin... | 02/14/1995 |
| 5322559 | Negative thermal expansion material Compounds that satisfy the general formula A1-Y4+ AY1+ AY3+ V2-X PX O7 exhibit isotropic NTE behavior in the range of normal ambient temperatures. Y is from abou... | 06/21/1994 |
| 5316570 | Stable heavy metal free zircon pigments for use in plastics and paints and method for coloring thereof Stable zircon pigment particles, at least about 50 percent by volume of which range from about 0.2 to about 2.5μ in size, provide useful heavy metal free pigments for plastics and paints. A method for coloring plastic and paint materials without the use ... | 05/31/1994 |
| 5275649 | Doped zirconium mixed silicate pigment, method for the preparation thereof and products containing such pigment or a thus prepared pigment A new doped zirconium mixed silicate pigment has been found, having a particle size D50 of 3 μm or less and a molar ratio of zirconium dioxide/silicon dioxide that deviates from the stoichiometric ratio and is in the range of 1/1.5-1/36. This ... | 01/04/1994 |
| 5256611 | Colored corundum composite and processes for its production and its use Colored corundum composite with a matrix of -Al2 O3, as formed by sol-gel process ending in sintering and size reduction steps with addition of oxide pigments (or precursors of such oxide pigments, formable to the oxide pigmen... | 10/26/1993 |
| 5252126 | Neutral blue zirconium-vanadium pigments Disclosed are neutral blue zirconium-vanadium pigments which do not display the disadvantages of previously known generic pigments, namely the high green component and the low color intensity and insufficient reproducibility in the case of neutral blue pi... | 10/12/1993 |
| 5203917 | Bismuth vanadate pigments, a process for their preparation and their use Bismuth vanadate pigment in the form of the tetragonal crystal structure of Scheelite useful in coloring lacquers and synthetic plastics or resins containing 0.1 to 0.3 mol ZrO2 (per mol of BiVO4) is prepared by heat treating mixed p... | 04/20/1993 |
| 5199982 | Process to manufacture colored pigments based on zircon A process for making colored pigments based on zircon is described whereby a mixture of zirconium halide, silicon halide and a metal halide chromophore are oxidized at a temperature in the range of from about 600° to about 1400° C. This combustion proce... | 04/06/1993 |
| 5107167 | Incandescent bug lamp with cadmium-free powder coating Disclosed is a yellow incandescent bugfoiler pigment coating comprising a fine-ground blend of praseodymium doped zirconium silicate and silica. This cadmium-free blend is applied electrostatically in three coats to the interior of a bulb to diffuse the l... | 04/21/1992 |
| 5021092 | Method for the preparation of gray-green pigments based on zirconium silicate/vanadium compounds and sodium compound The preparation of gray-green unitary pigment bodies based on zirconium silicate-vanadium oxide wherein a mixture of zirconium oxide and silicon oxide in the presence of a vanadium and lithium compound is calcined above 600° C. and wherein the amount of ... | 06/04/1991 |
| 4047970 | Production of calcined ceramic pigments The process for producing zirconium based pigments (also known as stains) comprises the direct use of plasma disassociated zirconium sand. The sand is comminuted to a suitable particle size, mixed with a color determining agent such as ammonium metavanada... | 09/13/1977 |
| 3950183 | Production of annealed pigments In the production of annealed products such as inorganic pigments wherein pigment-forming starting materials are mixed, optionally with the addition of auxiliary substances, thereafter annealed, optionally ground, washed and then dried, the improvement wh... | 04/13/1976 |