Bizarre Patents
Cloaking System Using Optoelectronically Controlled Camouflage
A Cloaking System designed to operate in the visible light spectrum, utilizes optoelectronics and/or photonic components to conceal an object within it.
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| Number | Title | Issue Date |
| 5807625 | Security document with reversibly photochromic printing inks Photochromic printing inks are disclosed which are in particular used for the printing of security documents. Prints are normally nearly colorless and become colored when energy irradiated, such as by ultraviolet light. This photocoloration is reversible.... | 09/15/1998 |
| 5630869 | Reversibly photochromic printing inks Photochromic printing inks are disclosed which are in particular used for the printing of security documents. Prints are normally nearly colorless and become colored when energy irradiated, such as by ultraviolet light. This photocoloration is reversible.... | 05/20/1997 |
| 5035743 | Desensitizing ink for the printing of self-copying sheets New nucleophilic urethanes are described and claimed, which are the reaction product of a monoisocyanate, a diisocyanate or a polyisocyanate with a basic alkoxylated amine whose hydroxyl functionality has been adjusted to a value of 0.5 to 2 by etherifica... | 07/30/1991 |
| 4966628 | Security document printing ink A printing ink for the printing of security documents by the method of engraved steel die printing, wherein the volatile solvents comprise at most 15%, referred to the total weight of the ink, of one or more volatile organic substances, and wherein the vo... | 10/30/1990 |
| 4767420 | Transfer printing sheet with impregnating agents and two-component electrophotographic toner and transfer printing of textile materials of cotton The transfer sheet or web is intended for the use in a heat transfer printing process of cotton, of cotton-polyester blend or of nitrogen containing textile fibers such as wool, silk or nylon. It comprises on its surface at least one organic impregnating agent... | 08/30/1988 |
| 4756759 | Printing ink in dry, powdered form A method for preparing a flexographic or gravure printing ink in dry, powdered form. The method comprises comminuting a blend of all ink components, the solvents excluded, under oxygen free and temperature controlled conditions. The powder obtained is hom... | 07/12/1988 |
| 4664670 | Transfer printing sheet carrying impregnant and transfer printing of cellulose, wool, silk or polyamide textile materials The transfer sheet or web is intended for the use in a heat transfer printing process of cotton, of cotton-polyester blend or of nitrogen containing textile fibers such as wool, silk or nylon. It comprises on its surface at least one organic impregnating agent... | 05/12/1987 |
| 4636223 | Heat transfer printing of natural silk substrates When silk fabrics, pre-treated with swelling agents, are printed by heat transfer techniques, the fabric will yellow. The invention eliminates yellowing by pre-treating said silk fabrics with a liquid or solid impregnating agent, dissolved or dispersed in... | 01/13/1987 |
| 4599111 | Desensitizing ink for wet offset printing A nucleophilic alkoxylated compound is bridged as a polyurethane by a polyisocyanate derivative or as a polyester by a polyacid derivative. A desensitizing ink for wet offset printing on an acceptor surface of a chemical duplicating set is thus obtained.... | 07/08/1986 |
| 4597793 | Desensitizing ink for wet offset printing In a desensitizing ink for the wet offset printing of a given area of the acceptor surface of a duplicating set containing an alkoxylated nucleophilic compound, preferably having a molecular weight lying in the range of from 2000 to 4000 and having a hydr... | 07/01/1986 |
| 4287234 | Desensitizing ink for the receiving surface of a chemical duplicating set by wet offset printing A desensitizing ink for wet offset printing on the acceptor surface of a chemical duplicating set of superimposed sheets where one of the sets has an electrophilic acceptor coating and the other a nucleophilic coating for producing a chromogenic reaction ... | 09/01/1981 |
