Biomedical devices, such as ophthalmic lenses, and methods of making such devices having a surface coating including at least one polyionic layer. A preferred method involves spray coating a polycationic material onto a core lens, rinsing and drying the lens, followed by spray coating a polyanionic material, rinsing and drying. The coating process may be applied a plurality of times to achieve a multi-layer coating on the lens surface. A particularly preferred embodiment is a contact lens compri...

A method is described for analyzing and characterizing parameters of a semiconductor wafer. In particular, an approach is described for characterizing the interface layer between a thin oxide film and a silicon substrate in order to more accurately determine the characteristics of the sample. The wafer is inspected and a set of measured data is created. This measured data is compared with theoretical data generated based on a theoretical set of parameters as applied to a model representing the p...

A vehicle depot such as for example a gas station, a bus stop or a truck terminal, is equipped with a communications system to receive data from a vehicle that represents the operational characteristics of the tires of the vehicle. The information may be automatically transmitted to an appropriate transceiver located at the gas station when the vehicle enters a preset perimeter of, or is a given distance from, the gas station. Thus, when the operator of the vehicle begins to pump gas or input ai...

A fluoropolymer composition is provided. The polymer comprises interpolymerized units derived from (i) tetrafluoroethylene, (ii) vinylidene fluoride, (iii) at least one ethylenically unsaturated monomer of the formula CF.sub.2.dbd.CFR.sub.f where R.sub.f is a perfluoroalkyl or a perfluoroalkoxy of 1 to 8 carbon atoms, and (iv) a perfluorovinyl ether of the formula CF.sub.2.dbd.CF--(OCF.sub.2 CF(R.sub.f)).sub.a OR'.sub.f where R.sub.f is as described in (iii), R'.sub.f is a perfluoroaliphatic, pr...

A system for automatically inspecting matter for varying composition includes one or more detection stations through which one or more streams of matter are advanced and particular materials therein are detected through their diffusely reflected IR spectra, if any, and/or through their variation of an electromagnetic field by their metallic portions, if any. A row of light sources distributed across the overall width of one or more belt conveyors may cause desired portions of the stream to refle...

A connector having reduced noise characteristics is provided having an electronic component, such as a capacitor, electrically connecting together the power ground and power voltage terminals of the connector, with the electronic component being located within the connector housing. Such a structure reduces any induced electrical noise from occurring in the signal terminals of the connector due to the power terminals.

A rheology-modified ink includes (1) an ink carrier, which is either aqueous-based or solvent-based, (2) an organic pigment, which is preferably an azo pigment of the type generally used with an aqueous-based ink carrier, and (3) a flow-modifier, which is a metal salt of either an aromatic carboxylic acid or an aromatic hydroxy carboxylic acid. Addition of the flow-modifier (also called a rheology-modifier) improves the dispersion of pigment within the aqueous-based carrier thereby improving the...

An input buffer circuit is disclosed which has feedback hysteresis transistors having similar size characteristics as the drive transistors. The drive transistors are located in a first inverting CMOS stage, connected in conventional CMOS inverter fashion. The drains of the drive transistors are connected to the input of an inverter, the output of which drives the signal to elsewhere in the integrated circuit. A first hysteresis leg is provided, consisting of a plurality of p-channel transistors...

Disclosed are antiperspirant stick compositions that exhibit substantially less visible residue (whitening) upon application to the skin or after drying and which exhibit improved aesthetics and superior cosmetic properties. The compositions include (a) non-volatile emollients that are not silicone materials and which have (individually or as a mixture) a refractive index of at least 1.4460, and which have adsorption and desorption properties relative to the antiperspirant material sufficient to...

A method and apparatus for performing electrical measurement of body mutual electrical impedances to determine changes in total body water in normal and deranged states of the body. The apparatus is particularly useful in determining the progression of dialysis cases during the period when renal dialysis is being performed on the patient. The method and apparatus utilizes a special electrical circuit for measuring electrical characteristics at selected body locations. Certain electrical characte...