Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 6821108 | Plastic castings molds The invention is concerned with the problem that with known plastic casting moulds, especially those of polypropylene, the lenses produced with these moulds have a slippery surface. The invention solves this problem through the use of polymers which are notable for ... | 11/23/2004 |
| 6638451 | Plastic casting molds The invention is concerned with the problem that with known plastic casting molds, especially those of polypropylene, the lenses produced with these molds have a slippery surface. The invention solves this problem through the use of polymers which are not... | 10/28/2003 |
| 5663212 | Light-sensitive resin composition A light-sensitive resin composition which can be developed in an alkaline aqueous solution and has an excellent image-forming performance and a sufficient UV absorbance after an image formation is disclosed. The light-sensitive resin composition includes ... | 09/02/1997 |
| 5141990 | Photocurable acrylic composition, and U.V. curing with development of U.V. absorber In-situ development of an ultraviolet absorber is provided by a compound such as a hydroxy-phenyl-triazole containing a group which protects the absorber during actinically activated polymerization by light at first frequency. After polymerization the pro... | 08/25/1992 |
| 4749726 | Internal stabilization of polycarbonate resins by two stage radiation process A new polycarbonate copolymer resin is formed by internal generation of stabilizers bound to the polymer chain. Irradiation of a solid piece or a deoxygenated solution of the resin at a first frequency below 300 nm generates 2 to 8 mol percent of phenyl s... | 06/07/1988 |
| 4515877 | Image-recording materials and image-recording carried out using these to produce an optical mask A resist film comprises a dimensionally stable base (B), which is transparent to actinic light in the wavelength range from 300 to 420 nm, and a mask-forming layer (ML) which is sensitive to heat radiation and contains a thermochromic system which, when i... | 05/07/1985 |
| 4486504 | Solventless, ultraviolet radiation-curable silicone coating compositions An ultraviolet radiation-curable silicone coating composition is disclosed which, when applied to a solid substrate, provides an abrasion-resistant coating firmly adhered thereon. The silicone coating composition is free of residual solvent and free of to... | 12/04/1984 |
| 4372835 | Silane-functionalized ultraviolet screen precursors Silane-functionalized ultraviolet screening agent precursors comprise compounds of the formula: ##STR1## wherein R is ##STR2## R1 is C1 -C6 alkyl, R2 is C1 -C6 alkyl or C | 02/08/1983 |
| 4344830 | UV Curable resins and sulfonate esters of benzotriazoles used in such resins Sulfonate esters of hydroxybenzotriazoles have been found useful in imparting weathering resistance to plastic substrates when applied as part of a UV curable resin which is thereafter cured under ultraviolet light.... | 08/17/1982 |
| 4328346 | Silane-functionalized ultraviolet screen precursors Silane-functionalized ultraviolet screening agent precursors comprise compounds of the formula: ##STR1## wherein R is ##STR2## R1 is C1 -C6 alkyl, R2 is C1 -C6 alkyl or C | 05/04/1982 |
| 4188451 | Polycarbonate article coated with an adherent, durable, silica filled organopolysiloxane coating and process for producing same A coated polycarbonate article comprising a polycarbonate substrate having (i) a primer layer comprising a UV cured reaction product of a polyfunctional acrylic ester monomer and an organic silicon compound of the formula R4c SiX | 02/12/1980 |
| 4179548 | UV curable resin compositions containing urethanes of hydroxybenzotriazoles or urethanes of hydroxy benzophenones Urethanes of hydroxybenzotriazoles and hydroxybenzophenones which can be chemically modified upon heating have been found useful in imparting weather resistance to plastic substrates when applied as part of a UV curable resin which can be subsequently hea... | 12/18/1979 |
| 4065315 | Phototropic dye system and photosensitive compositions containing the same The free bases of various amino dyestuffs, such as the amino derivatives of triarylmethane and xanthene dyestuffs form stable solutions with organic halides and a matrix, such as a film-forming binder. Dry films of such compositions are lightly colored; u... | 12/27/1977 |
