Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 4827466 | Information signal recording medium electrostatic capacitance type A recording medium of electrostatic capacitance type is recorded with an information signal thereon as variation of geometrical shape of the recording surface part of the recording medium. The signal is reproduced from the recording medium by the variatio... | 05/02/1989 |
| 4435802 | Synthetic resin material, particularly surface material for phonograph records with a photograph or picture A surface material for phonograph records prepared by subjecting a copolymeric vinyl resin powder incorporated with a small amount of a stabilizer to the hot blending treatment, melt-kneading the product under heating, cooling the same to ambient temperat... | 03/06/1984 |
| 4412941 | Recording disc compositions comprising polymers of monovinyl-substituted hydrocarbons, conductive carbon black and lubricants Electrically-conductive compositions comprising about 65-85 weight percent of a resin component based on conjugated alkadienes having 4 to 8 carbon atoms and monovinyl-substituted arenes having 8 to 12 carbon atoms, with 10-30 weight percent extra-conduct... | 11/01/1983 |
| 4299736 | Conductive molding composition and discs therefrom Polyvinyl chloride base molding compositions containing conductive carbon particles which have been treated with a fatty acid chloride have reduced melt viscosities, improved processabilities, and increased electrical conductivities, as well as improved d... | 11/10/1981 |
| 4283315 | Gramophone record composition Gramophone records are prepared from a vinyl polymer composition containing a fatty acid soap of an alkaline earth metal or zinc, sugar or polyol fatty acid esters and fatty acid mixed glycerides and is free of heavy metal ions.... | 08/11/1981 |
| 4283310 | P.V.C. Compositions for extrusion moulding A polyvinyl chloride composition for use in extrusion moulding contains an alkaline earth metal or zinc soap of one or more fatty acids having an iodine value of from 20-60 as the only stabilizer, a lubricant and is lead-free.... | 08/11/1981 |
| 4241120 | Video discs and molding compositions therefor A polyvinyl chloride based molding composition containing polymer grafted conductive carbon particles has good processability, low heat distortion temperature and good dispersion of the conductive particles and can be molded to form video discs of improve... | 12/23/1980 |
| 4228050 | Conductive molding composition An improved molding composition having a bulk resistivity below about 500 ohm-cm at 900 megahertz for compression molding video discs comprising sufficient conductive carbon black particles to obtain the desired conductivity, from about 1.5 to 4 percent b... | 10/14/1980 |
| 4151132 | Molding composition An improved molding composition for compression molding non-coated video discs containing about 12-20 percent of conductive carbon black particles, about 10 percent of a vinyl chloride-vinyl acetate copolymer, about 10 percent of a vinyl chloride-maleate ... | 04/24/1979 |
| 4129536 | Vinyl chloride based injection molding composition A vinyl chloride based injection molding composition comprises a vinyl chloride-propylene copolymer, a mercapto tin stabilizer, an acrylic processing aid and an ester wax lubricant. This composition has excellent flow characteristics and can form molded a... | 12/12/1978 |
| 3975321 | Sound reproduction compositions Novel sound reproduction molding compositions of good processing qualities are disclosed, based on copolymer of vinyl chloride and propylene. Records obtained therefrom, have good audio qualities and resistance to impact, thermal warpage and water blister... | 08/17/1976 |
| 3960790 | Disc record and method of compounding disc record composition A method of making a disc record molding composition by compounding a copolymer of vinyl chloride-vinyl acetate and a homopolymer of vinyl chloride, with carbon black, a resin stabilizer, a resin plasticizer, an antistatic agent and a mold release agent i... | 06/01/1976 |
