Abstract: There is provided a one-press method for producing a glass vessel, the method enabling efficient production of even a glass vessel having the maximum thick wall part having a thickness larger than a predetermined value by using a divided type forming mold having a specific parting line.

Abstract: There is provided a one-press method for producing a glass vessel, the method enabling efficient production of even a glass vessel having the maximum thick wall part having a thickness larger than a predetermined value by using a divided type forming mold having a specific parting line.

Abstract: A ceramic substrate sintered at low temperature comprising: 20 to 50% by volume of an anorthite (CaAl.sub.2 Si.sub.2 O.sub.8) crystal phase, 1 to 20% by volume of a gahnite (ZnAl.sub.2 O.sub.4) crystal phase and the balance of a glass phase and, further, containing 35 to 50% by weight of alumina (Al.sub.2 O.sub.3) as a filler. Since the substrate can be sintered at a temperature lower than 900.degree. C., has a mechanical strength as large as more than 2500 kgf/cm.sup.2 and a thermal expansion coefficient of less than 60.times.10.sup.-7 /.degree.C., Au Ag and Cu can be used as a conductor and the substrate can be used like that existent alumina substrate.

Abstract: An insulating powder for the formation of a resistant coating is disclosed which comprises a glass powder consisting of 60 to 70% by weight of ZnO, 19 to 25% by weight of B.sub.2 O.sub.3, and 10 to 16% by weight of SiO.sub.2. A composition for the formation of a resistant coating is also disclosed which comprises the powdered oxide of a platinum-family element; the powder of at least one oxide selected from the group consisting of indium oxides, tin oxides, and cadmium oxides; a glass powder capable of forming a crystalline phase on being fired; a ceramic powder; and an organic vehicle.