Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7341626 | Pigment compositions consisting of organic and inorganic pigments A pigment composition containing one or more, organic yellow pigments selected from the group C.I. Pigment Yellow (213), Pigment Yellow (214) and disazo pigment of the formula (I) and containing one or more inorganic pigmen... | 03/11/2008 |
| 7339000 | Method and apparatus for producing an aqueous paint composition from a plurality of premixed compositions The present invention is directed to the provision of premixed aqueous compositions which are used to provide a paint composition of varying finish characteristics at the point of sale. Thus, the merchant distributing the paint composition made from the subject prem... | 03/04/2008 |
| 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 |
| 7291217 | Non-toxic corrosion-protection pigments based on rare earth elements A corrosion-inhibiting pigment comprising a rare earth element and a valence stabilizer combinded to form a rare earth/valence stabilizer complex. The rare earth element is selected from cerium, terbium, praseodymium, or a combination thereof, and at least one rare ... | 11/06/2007 |
| 7285162 | Titanium dioxide pigment having improved light stability In various embodiments, methods and compositions are provided comprising titanium dioxide and silica spacers having improved light stability for use in paper, plastic and paints. ... | 10/23/2007 |
| 7250080 | Process for the manufacture of organosilicon compound-treated pigments An improved process for making an organosilicon compound surface-treated titanium dioxide material, comprising (a) forming a mixture of the titanium dioxide material in water, (b) wet milling the mixture, (c) adjusting the pH of the slurry resulting from step (b) to... | 07/31/2007 |
| 7135065 | Method for the post-treatment of titanium dioxide pigments The invention relates to a method for the post-treatment of titanium dioxide, in order to produce particularly weather-resistant titanium dioxide pigments with good optical properties. The method is characterized in that, together with the hydrous oxides of tin and ... | 11/14/2006 |
| 7018465 | Aerosolized ceramic porcelains and glaze composition A spray glaze or opaque composition for coating dental restorations and other surfaces and objects such as hobby ceramics that comprises about 4 to about 50 weight % glaze material, about 5 to about 60 weight % restoration wetting agent, and about 10 to about 90% no... | 03/28/2006 |
| 6947111 | Multilayer non-metallic reflecting flakes for cosmetics and sunscreens A material for protection against injurious ambient light composed of a binder mixed with non metallic reflective flakes is disclosed. ... | 09/20/2005 |
| 6911075 | Pigments having improved coloristic properties and process for their preparation The invention relates to a process for preparing pigments, which comprises subjecting a crude pigment or mixture of crude pigments and a crystalline inorganic salt or mixture of crystalline inorganic salts together, essentially in ... | 06/28/2005 |
| 6884289 | Colored pigments The present invention relates to colored pigments based on multicoated platelet-shaped substrates which are distinguished by the fact that they comprise (A) a coating having a refractive index of n>1.8 and a layer thickness of 20-5... | 04/26/2005 |
| 6875264 | Multi-layer effect pigment A multilayer effect pigment includes a transparent substrate, a layer of high refractive index material on the substrate, and alternating layers of low refractive index and high refractive index materials on the first layer, the total number of layers being an odd n... | 04/05/2005 |
| 6838494 | Light reflecting polymeric compositions The present invention provides a light reflecting polymeric composition that includes at least one halogenated-flame-retardant-additive-free polymer having dispersed therein a pigment package including a combination of Sb2O3 and TiO2... | 01/04/2005 |
| 6821333 | Color effect materials and production thereof A color effect material is described as composed of a plurality of encapsulated substrate platelets in which each platelet is encapsulated with a highly reflective layer which acts as a reflector to light directed thereon and a spacer pigment layer which is selectiv... | 11/23/2004 |
| 6648957 | Multilayer nacreous pigment Multilayer pearl lustre pigment on the basis of a platelet-shaped substrate comprising a material of low refractive index in the range from 1.35 to 1.8, which comprises at least (i) one first layer comprising a material having a refractive index of more ... | 11/18/2003 |
| 6616745 | Black pearlescent pigments A metal oxide-coated mica pearlescent pigment having a coating of copper chromite thereon is provided.... | 09/09/2003 |
| 6602340 | Transparent medium with angular-selective transmitting or reflecting properties The invention relates to a transparent medium comprising pearl lustre pigments having angle-selective reflection and/or transmission properties and to the use thereof, especially in transparent thermal insulation systems (TIMs).... | 08/05/2003 |
| 6596073 | Solid pigment preparations The invention relates to a solid pigment composition comprising a) at least one pigment, b) at least one compound selected from the group consisting of b0) a phenol-styrene-polyglycol ether or an ionically modified phenol-styrene-polyglycol ether, b1) a condensatio... | 07/22/2003 |
| 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 |
| 6579356 | High strength Fe-Cr brown with excellent weathering One aspect of the invention relates to a brown pigment composition with excellent weathering resistance containing iron oxide, chromium oxide, and one or more alumina and/or silica components. Another aspect of the invention relates to a method of making ... | 06/17/2003 |
| 6533857 | Gloss pigments comprising an absorbent low-refractive coating Luster pigments based on multiply coated reflecting platelet-shaped substrates and comprising at least one layer packet comprising A) a low refractive coating which selectively absorbs visible light and B) a reflective coating which is at least partially transparen... | 03/18/2003 |
| 6500251 | Multi-coated interference pigments Multilayer interference pigment consisting of plateletlike titanium dioxide as carrier material, coated with alternating layers of metal oxides of low and high refractive index, the difference in the refractive indices being at least 0.1, which is obtaina... | 12/31/2002 |
| 6485556 | Interference pigments Pearlescent pigment having a chromium coating thereon and an iron oxide coating on the chromium coating are intensely colored, almost phosphorescently colored, and are highly reflective.... | 11/26/2002 |
| 6454848 | Infrared reflective color pigment The present invention provides new solid solutions having a corundum-hematite crystalline structure which are useful as inorganic color pigments. Solid solutions according to the present invention include a host component having a corundum-hematite crysta... | 09/24/2002 |
| 6409815 | Surface-modified conductive pigment Surface-modified conductive pigment obtainable by partial coating of a conductive pigment with an organic modifying agent. The modifying agent is an organometallic compound of the elements silicon, tin, titanium, zirconium or aluminum. The pigment is prep... | 06/25/2002 |
| 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 |
| 6372517 | Magnetic particles with biologically active receptors Magnetic particles for separating biological mixtures consist of nacreous luster pigments with magnetic properties coated with a biological polymer.... | 04/16/2002 |
| 6361593 | Lustrous interference pigments with black absorption color A lustrous interference pigment with a black absorption color is obtained by forming a mica coated with hydrous titanium, iron and cobalt or chromium oxides, calcining the coated mica and then coating the resulting product with hydrous titanium and/or iro... | 03/26/2002 |
| 6334892 | Tungsten nickel-antimony-rutile mixed-phase pigments Tungsten nickel-antimony-rutile mixed-phase pigments in which the nickel/tungsten molar ratio is ࣙ4 are used to color plastics, coating materials, printing inks and ceramic glazes.... | 01/01/2002 |
| 6290766 | Lustrous interference pigments with black absorption color A lustrous interference pigment with a black absorption color is obtained by forming a mica coated with hydrous titanium, iron and cobalt or chromium oxides, calcining the coated mica and then coating the resulting product with hydrous titanium and/or iro... | 09/18/2001 |
| 6284032 | Multilayer interference pigments Multilayer interference pigment consisting of plateletlike titanium dioxide as carrier material, coated with alternating layers of metal oxides of low and high refractive index, the difference in the refractive indices being at least 0.1, which is obtaina... | 09/04/2001 |
| 6271157 | Formulations based on water soluble compounds of titanium and chromium combined with antimony or tungsten or mixtures thereof suitable for coloring ceramic manufactured articles and relevant high temperature coloring process Composition whereby ceramic manufactured articles, obtained by moulding a conventional ceramic mixture without added TiO2., are colored from yellow to orange, said composition consisting of an aqueous solution of inorganic compounds or organic ... | 08/07/2001 |
| 6238472 | Metal oxide coated titanium dioxide lamellas Colored pearl luster pigment consisting of a core of platelet shaped titanium dioxide and one or more layers of other metal oxides or metal oxide hydrates obtainable by solidifying an aqueous solution of a thermally hydrolyzable titanium compound on a con... | 05/29/2001 |
| 6214917 | Laser-markable plastics The present invention relates to laser-markable plastics, in particular thermoplastic polyurethanes, which are distinguished by the fact that they contain pigments having a coating of doped tin dioxide.... | 04/10/2001 |
| 6193794 | Goniochromatic luster pigments based on multiply coated iron oxide platelets The iron oxide platelets comprise at least one layer packet comprising A) a colorless coating having a refractive index nࣘ1.8, and B) a colorless coating having a refractive index nࣙ2.0.... | 02/27/2001 |
| 6174360 | Infrared reflective color pigment The present invention provides new solid solutions having a corundum-hematite crystalline structure which are useful as inorganic color pigments. Solid solutions according to the present invention include a host component having a corundum-hematite crysta... | 01/16/2001 |
| 6106606 | Spherical particles on the basis of metal oxides, method for its manufacture and its utilization The invention relates to spherical particles having a size between 5 and 10,000 nm and containing either SnO2 or SnO2 and at least one further oxide of the elements from the 1st to fifth main groups and/or the transitional... | 08/22/2000 |
| 6099634 | Fan- or disk-shaped titanium oxide particles, processes for production thereof and uses thereof A titanyl sulfate solution or a titanium tetrachloride solution is neutralized with an alkali to form orthotitanic acid, to which hydrochloric acid is added such as to adjust the TiO2 concentration to 80-140 g/L and the HCl concentration to 90-... | 08/08/2000 |
| 6086667 | Pigments coated with ultraviolet radiation absorbent The invention relates, in particular, to pigments in the form of fine particles having enhanced stability with respect to ultraviolet solar radiation and particle radiation (electrons, protons), characterized in that the pigment are coated with a UV filte... | 07/11/2000 |
