Junkosha Co., Ltd.

W. L. Gore & Associates, Inc.

Japan Gore-tex Inc.

Olympus Optical

Haruo Nomi

Akira Suzuki

Yuko Fujita

Hiroyasu Kikukawa

Yoshihiko Shibata

Hisashi Kudo

Tetsuo Fujie

Yoshiharu Iwanami

Ryozo Ueno

Masaki Yoshida

A flexible, non-porous tube characterized by the fact that the void spaces present in the luminal surface of a substrate tube of porous polytetrafluoroethylene are filled with a silicone or fluorosilicone rubber, that a continuous coating of said silicone or fluorosilicone rubber is not present on the inner surface of said tube, and that the inner surface of said tube incorporates surfaces of both the polytetrafluoroethylene and the silicone or fluorosilicone rubber. The tube has excellent lubricity, resistance to contamination, resistance to chemicals, and has exceptional tube flexing properties. The flexible tube may be employed, for example, as a tube for removal of gas destructively tested by a gas sensor, as a tube for transporting various liquids, and particularly as a tube in medical applications, such as a forceps channel tube, an endoscope channel tube, a bodily fluid transport tube, catheter tube, or the like. A method of making the tube is also described.

Flexible, non-porous tube and a method of making

Sensor for measuring solute concentration in an aqueous solution

A laminated composite material containing sorbent particles which are protected from contact by liquids. The materials can be used in devices to sorb gases and vapors and are suitable for use in chemical protective clothing.

Liquid-penetration-resistant sorbent laminate

A water-vapor-permeable, waterproof, highly elastic film of expanded, porous, unsintered polytetrafluoroethylene having impregnated within the pores of the porous film, on both sides thereof, a water-vapor-permeable resin, for example, an elastomer containing urethane bonds and a hydrophilic group(s) in its molecular structure. The film of this invention is useful in clothing, tents, and various applications where water vapor transmission characteristics and waterproofness are simultaneously desired. The film has elongation percentage in at least one direction exceeding 40% and durability in repeated stretching to 80% of its elongation percentage of more than 200,000 cycles.

Water-vapor-permeable, waterproof, highly elastic films

A water-vapor-pervious, optionally waterproof, heat insulating material is provided wherein a discontinuous layer of thin, reflective aluminum particles or flakes are adhered to a surface of a heat insulating material which is water-vapor-pervious and which may be waterproof, the adhesive being a resinous material which is pervious to water vapor.

Water-vapor-pervious, optionally waterproof, heat insulating material

A self-cooling water container is provided capable of keeping the temperature of the contained water lower than the ambient temperature by utilizing the heat of water vaporization. The disclosed water container is comprised of a water repellant, continuously porous resin material or a gas permeable laminate including the porous material as a major ply element.

Self-cooling water container

A colored, porous fluorocarbon material is provided wherein a porous layer of a colored dyeing-site resin is formed on all surfaces of the fluorocarbon material. This new material is made by a process whereby an auxiliary solvent which does not readily dissolve a dyeing-site resin, if at all, is added to a solution of the dyeing-site resin in a main solvent, and this is coated onto the surfaces of the fluorocarbon material and dried. The material may be dyed by adding dyestuff to the aforesaid solution or it may be dyed after coating and drying. The coated fluorocarbon material can be stretched.

Growing community of inventors

Okayama, Japan

Haruo Nomi