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Patent No. 5823572

Self Defense Weapon With Memo

A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.

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Assignee: Minnesota Mining & Manufacturing Company


Location: St.Paul, MN
No. of patents: 173

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NumberTitleIssue Date
6254678Apparatus for applying coating materials to overlapped individual sheets
A method and apparatus for applying pressure sensitive adhesive to a substrate, in which the adhesive is deposited on a transfer surface, such as a circulating transfer belt, dried, and subsequently transferred to a plurality of overlapping sheets. The sh...
07/03/2001
6254981Fused glassy particulates obtained by flame fusion
The disclosure describes methods for producing bulk, particulate material that includes solid, generally ellipsoidal particles. Irregularly shaped feed particles with average particle sizes of up to 25 microns on a volume basis are dispersed in at least a...
07/03/2001
6215927Sensing tapes for strain and/or temperature sensing
A tape to be mounted on a workpiece includes an elongated support ribbon and an optical fiber attached to the support ribbon....
04/10/2001
6206942Method for making abrasive grain using impregnation, and abrasive articles
Method for making alpha alumina-based abrasive grain, wherein during an impregnation step of the method, alpha alumina-based ceramic precursor particles conchoidally fracture. The abrasive grain can be incorporated into abrasive products such as coated ab...
03/27/2001
6197485Photographic assemblage comprising a silver halide photographic element sealed in a closed vessel
A photographic assemblage comprising a silver halide photographic light-sensitive element comprising at least one sulfur and gold sensitized silver halide emulsion layer, said element comprising chlorinated s-triazine hardeners and photographically useful ...
03/06/2001
6129540Production tool for an abrasive article and a method of making same
An abrasive article is provided having a sheet-like structure having a major surface having deployed in fixed position thereon a plurality of abrasive three-dimensional abrasive composites, each of the composites comprising abrasive particles dispersed in...
10/10/2000
6087080Reduction of the sensitometric toe area of photographic films
A negative-acting silver halide photographic element comprising a hydrophilic colloidal binder containing a silver halide emulsion and from 50 to 1000 milligrams of an anthraquinone per mole of silver halide....
07/11/2000
5962120Abrasive article back up pad with foam layer
An abrasive article back up pad having a resilient, open cell polyurethane foam formed as the reaction product of a polyether polyol and an aromatic polyisocyanate, such as an aromatic polyisocyanate including methylene diphenyl diisocyanate ("MDI"), and ...
10/05/1999
5954844Abrasive article comprising an antiloading component
An abrasive article, for example, a coated, bonded, or nonwoven abrasive article comprising a binder, a plurality of abrasive particles, and an antiloading component....
09/21/1999
5946134Raised structure retroreflective article
A cube corner article and method of manufacturing the article from a series of directly machinable unitary substrates. The method of manufacture comprises the first step of providing an initial unitary directly machinable substrate of material suitable fo...
08/31/1999
5928070Abrasive article comprising mullite
A low-density abrasive article comprising a nonwoven web and a multiplicity of abrasive particles which are bonded to the nonwoven web by means of an adherent binder. Abrasive particles useful in the present invention have particle sizes between about gra...
07/27/1999
5908477Abrasive articles including an antiloading composition
An abrasive article is provided that includes a bond system formed from a binder precursor and about 15% by weight or less of a wax-containing modifier. An abrasive article that includes the bond system exhibits an increase of workpiece surface abraded in...
06/01/1999
5908700Hydroxyl groups-terminated macromonomer grafted on polyurethane
A moisture-curable, hot melt composition comprising a graft polyurethane prepolymer made by reacting a macromonomer, polyol, polyisocyanate and optional silane reagent is provided. The composition advantageously provides adhesives having initial creep res...
06/01/1999
5908478Method for making abrasive grain using impregnation, and abrasive articles
Method for making alpha alumina-based abrasive grain from a dispersion comprising boehmite, wherein the method involves the impregnation of an alpha alumina-based ceramic precursor material. The abrasive grain can be incorporated into abrasive products su...
06/01/1999
5900317Flame-treating process
The present invention provides a method of modifying the surface of a polymeric substrate, e.g., to improve the wettability of the polymer film surface and/or affix silicon-containing structures to the substrate surface, comprising exposing the substrate ...
05/04/1999
5898981Synthetic filter media and method for manufacturing same
A composite filter media (100) includes a meltblown fiber material and a nonwoven filter web which are preferably attached to each other by needling the nonwoven filter web with the meltblown fiber material. A netting (104) is then attached by preferably ...
05/04/1999
5898523Tiled retroreflective sheeting composed of highly canted cube corner elements
A retroreflective sheeting includes a first array of cube corner element opposing pairs and a second array of cube corner element opposing pairs. The symmetry axes of the cube corner elements in the first and second arrays are tilted in a backward directi...
04/27/1999
5891967Flame-treating process
The present invention provides a method of modifying the surface of a polymeric substrate, e.g., to improve the wettability of the polymer film surface and/or alter the reactivity of the surface of the substrate by further oxidation, comprising exposing t...
04/06/1999
5872197Initiator system and adhesive composition made therewith
Systems for initiating the polymerization of acrylic monomers comprising (1) organoborane amine complexes and (2) bireactive decomplexers preferably comprising at least one free-radically polymerizable group and at least one amine-reactive group in the sa...
02/16/1999
5868838Apparatus and method for applying coating materials to individual sheet members
Sheets to be coated with water-based coating material, for example a primer and a low adhesion backsize, are supplied from a feeder (1), in end-to-end overlapping relationship, to a dual coater (3) in which the sheets are coated individually on both sides...
02/09/1999
5861211Articles incorporating pressure-sensitive adhesives having improved adhesion to plasticized polyvinyl chloride
Articles comprising a substrate, preferably a retroreflective sheeting, having a coating of a pressure-sensitive adhesive composition, and articles wherein the adhesive adheres the substrate to a highly monomericly plasticized PVC component, preferably a ...
01/19/1999
5858516Imaging medium comprising polycarbonate, method of making, method of imaging, and image-bearing medium
A polymeric imaging medium comprising a receptor layer and a polycarbonate backing layer particularly useful in electrophotographic printing processes with liquid toners comprising thermoplastic toner particles in a liquid carrier that is not a solvent fo...
01/12/1999
5852148Perfluoroalkyl halides and derivatives
Novel mixtures of perfluoroalkyl halides and derivatives thereof are described. These mixtures contain some compounds with a straight perfluoroalkyl group and some with a branched perfluoroalkyl group. Methods of preparation and use are also described....
12/22/1998
5851247Structured abrasive article adapted to abrade a mild steel workpiece
The present invention is directed to a structured abrasive article that provides an enhanced cut rate and extended productive life when abrading mild steel workpieces. This abrasive article includes a backing having a surface that contains precisely shape...
12/22/1998
5848696Wrapped material, and method and apparatus for wrapping and unwrapping such material
An elongate mass of material wrapped by a liner in which the liner is wrapped around the material with the liner inside surface facing the peripheral surface of the material, with first and second regions of the liner extending away from the material with...
12/15/1998
5848769Drag reduction article
An article for reducing the drag caused by a fluid flowing over a surface comprises an outer layer having an exposed patterned surface that reduces drag, an inner reinforcing layer, and an intermediate layer for bonding the outer layer to the reinforcing ...
12/15/1998
5849462Negative-acting no-process printing plates
A photosensitive composition is prepared containing a polymer of the formula B(X)(Y) wherein B represents an organic backbone, each X independently is an acidic group or salt thereof and each Y independently is a photocurable group and a photoinitating co...
12/15/1998
5849375Candle filter
Fluid permeable candle filter comprising a self supporting tube a filter layer and a filter layer. The self supporting tube comprises ceramic oxide fibers and silicate ceramic oxide bonding phase. The filter layer comprises non-woven ceramic oxide fibers ...
12/15/1998
5849646Coated abrasive backing
The present invention provides a backing for a coated abrasive article, wherein the backing includes a tough, heat resistant, thermoplastic binder material, and an effective amount of a fibrous reinforcing material distributed throughout the thermoplastic...
12/15/1998
5843617Thermal bleaching of infrared dyes
An imaging method is provided that includes a tetraarylpolymethine dye, and bleaching this dye by bringing the dye into contact with a 4-alkyl or 4-unsubstituted 1,4-dihydropyridine derivative....
12/01/1998
5830248Method for making a spliceless coated abrasive belt
A method of making a coated abrasive article and the product thereof, involving the steps of: providing an endless spliceless backing loop substrate; applying fibrous reinforcing material onto a major surface of the endless backing substrate by applying o...
11/03/1998
5820450Abrasive article having precise lateral spacing between abrasive composite members
The present invention provides a method of forming an abrasive article comprising the steps of providing an embossed carrier web having a plurality of recesses formed in the front surface thereof; filling the recesses with an abrasive composite slurry tha...
10/13/1998
5807458Reinforcing elements for castable compositions
Methods and articles for reinforcing castable compositions through the use of reinforcing elements maintained in a close-packed alignment in a dispersible containment means....
09/15/1998
5807628Method of repairing sound attenuation structure used for aircraft applications
A method and product for repairing a sound attenuation structure for aircraft jet engine noise that includes a central honeycomb core having an imperforate facing sheet adhesively bonded thereto and a perforated facing sheet adhesively bonded to the oppos...
09/15/1998
5798409Reactive two-part polyurethane compositions and optionally self-healable and scratch-resistant coatings prepared therefrom
The present invention relates to two-part reactive polyurethane compositons and the cured coatings prepared therefrom. The invention also relates to particular compositions and cured coatings therefrom that exhibit high damping character, excellent scratc...
08/25/1998
5795834Adhesive tape and method of making
An adhesive tape is provided which comprises a woven cloth, a polymer embedded into the cloth so as to cause the warp and weft fibers of the cloth to bond together at their overlapping points but not to completely encase the fibers, and a pressure sensiti...
08/18/1998
5776651Laminable proofing elements
This application discloses a core/shell latex thermal adhesive comprising a thermally softenable polymeric shell having a Tg of greater than 20°C., and a thermally softenable, crosslinked polymeric core having a Tg of less than 20° C., the difference be...
07/07/1998
5770145Superior high alkali metal and calcium sol gel abrasive and processes for its production
A process for forming a ceramic alumina-based abrasive grain from a sol gel which contains aluminum oxide monohydrate, a dissolved metal containing sintering aid and sufficient sodium and/or calcium compound to provide in the ceramic from above about 0.05...
06/23/1998
5753754Flame-treating process
The present invention provides a method of modifying the surface of a polymeric substrate, e.g., to improve the wettability of the polymer film surface and/or alter the reactivity of the surface of the substrate by further oxidation or affixation of nitro...
05/19/1998
5753346Cationically co-curable polysiloxane release coatings
The invention provides a radiation curable release coating composition comprising: (a) about 1 to about 50 percent by weight of a cationically reactive polydiorganosiloxane liquid rubber having the following formula: ##STR1## wherein R are monovalent...
05/19/1998
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