A hardener composition for alkaline phenolic resole resin binders which comprises a solution of a benzylic ether resole resin in an ester. Binder compositions comprising this hardener with alkaline phenolic resole resins are further provided as are foundry molding compositions and methods for making foundry cores and molds using the molding compositions.

A method of forming a protective coating on aluminum and aluminum alloy surfaces to improve adherence of siccative coatings such as inks paints and lacquers. The method involves rinsing acid treatments from aluminum surfaces followed by coating the aluminum surfaces with a polymeric composition. The method provides improved adhesion of siccative coverings to treated aluminum surfaces over chrome c...

Disclosed herein is a lubricating oil composition containing a major portion of a lubricating base oil and a minor portion of additives compris-ing a zinc di (primary alkyl) dithiophosphate and a zinc di (secondary alkyl) dithiophosphate in proportions to give a weight ratio in phosphorus content of from 20:80 to 80:20, a sulfur compound in a proportion to give a sulfur content of from 300 to 1,20...

A valved-closure for an aerosol container having a bonding agent (10) disposed between the gasket (116) and the mounting cup (118). Further laminated metal and polymer layers having a bonding agent (10) disposed between the laying in strip (12) form.

A non-refillable valve for a pressurized container which includes a unidirectional stepped valve housing within which a freestanding blocking element is housed. The blocking element is preferably a reversible, symmetrical check that integrally includes stop means for preventing the return of said blocking element to an initial location after it has been moved to a final location that activates the...

In a vibration gyroscope (1), a vibrator (2) is mounted to a mounting substrate (7) through support pins (6a, 6b). The mounting substrate (7) and a support substrate (10) are disposed opposite by inserting protrusions (11a, 11b) of the support substrate (10) into second insertion holes (9a, 9b) of the mounting substrate (7) and by supporting the mounting substrate (7) with convex molded sections (...

A high stability, high resistance metal film resistor having layered metallic films deposited and annealed such that one layer has a positive TCR and a negative TCR Slope, while a second layer has a negative TCR and a positive TCR Slope, thereby yielding a resistive film having TCR and a TCR Slope approaching zero.

An electromagnetic clutch according to the present invention includes a rotor (15) having a friction surface (153a) and an armature plate (26) having a friction surface (26a). The two friction surfaces face each other. An annular friction member (60c) made of non-metallic material is fixedly disposed on either the radial outermost friction surface of the rotor or the radial outermost friction surf...

The laser diode forms active layer as ZnSSe quantum well having tensile-strain and enables to decrease threshold current density and shortens the wavelength of oscillation using the lattice matched MGZnSSe as lattice for clad layer to ZnSe. The laser diode forms the buffer layer and ZnSc layer on the GaAs substrate, clad active layer of multiple quantum wells having ZnSySe1-y as active layer and M...

A quantum device including a plate-like conductor part having a necking portion and a method of producing the same are disclosed. The method includes the steps of forming a first mask layer having a first strip portion on a conductor substrate; forming a second mask layer having a second strip portion on the conductor substrate; etching a region of the conductor substrate which is not covered with...

A battery construction and a method of producing the construction. The construction comprises a ceramic separator having a honeycomb structure in which cells run lengthwise of the honeycomb and are separated by porous walls, and internal positive and negative electrodes positioned in part at least within the honeycomb structure.

A photodetector of the present invention is devised to reduce the dark current by employing a novel guard ring structure suitable for mesa type photodiode (PD) . Namely, the PD of the present invention has a structure in which a p-type or n-type semiconductor region (13) which is to be a light receiving area is surrounded by a semiconductor region (14) (guard ring) of the same conduction type. A g...

A sealing material exhibiting excellent sealing performance while keeping satisfactory balance among a variety of characteristics is provided so that the sealing structure is simplified and the quantity of the sealing material is reduced. As a result, a solar cell the cost of which can significantly be reduced and which can be operated stably for a long time while exhibiting excellent performance....

The present invention aims to provide a highly reliable semiconductor element with high performance, and a fabrication method for such highly reliable semiconductor in excellent mass production. A fabrication method for photovoltaic elements comprises an electric conductor (301), semiconductor regions (302) and a transparent conductor layer (303), which are formed on a substrate. The shunt resista...

A solar cell module is provided which is excellent in folding workability and durability. The filler thickness in the suspended part 101, engagement part 103, rising part 104 and engagement part 105 of solar cell module 101 are made thinner than the filler that is placed other parts than these fold molded parts.

An AC system having, for example, a voltage source (1), an inductance (2) and a load (3) has connected thereto an apparatus for controlling the phase and amplitude of the voltage of the system. The instantaneous current and voltage in the AC electrical system are measured (410, 440) and power measurements derived (430) therefrom. The power measurements may be instantaneous real and imaginary power...

An improved method and apparatus for treating a gaseous medium polluted with volatile organic solvents to produce a purified gaseous medium and a separate methane-rich and combustible gas. The method involves wet-scrubbing the gaseous medium with a liquid stream in a countercurrent wet scrubber to produce a purified gaseous medium and a separate liquid stream loaded with the volatile organic solve...