Abstract: The pad, of round or polygonal shape, has two compressed outer surfaces, and an entirely or nearly uncompressed body. The more highly compressed the surfaces, the less permeable the pad becomes to liquids and substances having the consistency of a salve. The pads are suitable for applying and/or absorbing liquid or semi-liquid materials in cosmetics, medicine end numerous fields of technology.
August 10, 1994
Date of Patent:
January 2, 1996
Flawa Schweizer Verbandstoff-und Wattefabrieken AG. Flawil
Abstract: For improvement in heat radiation capability without sacrifice of affinity for a paste, a substrate used for fabrication of a thick film circuit has a multi-level structure having a foundation of an aluminum nitride and a surface film provided on the foundation, and the surface film is formed of an oxygen compound containing silicon atoms.
Abstract: Birefringence-free arrangement of plastic foils, characterized in that two plastic foils having a single principal optical axis, said optical axis lying within the plane of the plastic foil, are arranged parallel behind each other so that the optical axes of both plastic foils are forming an angle of 90.degree..+-.7.degree. and the material of the foils with regard to its optical properties and the thickness of the foils being selected in such a manner that the optical path differences .DELTA.n.sub.1 D.sub.1 for the light waves which are associated with the two main refraction indices within the first plastic foil is approximately equal to the optical path difference .DELTA.n.sub.2 d.sub.2 of the second plastic foil, .DELTA.n.sub.1, .DELTA.n.sub.2, being the difference of the main refraction indices in the first and second foil, respectively, and d.sub.1, d.sub.
Abstract: A honeycomb-laminate composite structure comprisingA. a cellular core of a polyquinoxaline foam in a honeycomb structure, andB. a layer of a non-combustible fibrous material impregnated with a polyimide resin laminated on the cellular core,A process for producing the honeycomb-laminate composite structure and articles containing the honeycomb-laminate composite structure.
June 22, 1976
Date of Patent:
December 6, 1977
The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
Abstract: A new product in the form of high tensile strength belting, and the method of making the same. The product is high tensile strength oriented nylon bonded to a layer of rubber on one or both faces. A sheet of nylon film is bonded to one face of a sheet of rubber, and the layer of nylon film on the sheet of rubber is then bonded to a sheet of oriented nylon with an adhesive which bonds the two nylon surfaces together.