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| Number | Title | Issue Date |
| 6590645 | System and methods for classifying anomalies of sample surfaces Two or more defect maps may be provided for the same sample surface at different detection sensitivities and/or processing thresholds. The defect maps may then be compared for better characterization of the anomalies as scratches, area anomalies or point ... | 07/08/2003 |
| 6555410 | Photodetector and device employing the photodetector for converting an optical signal into an electrical signal An anti-reflective coating having a composite layer of silicon nitride and silicon dioxide may be formed over the entire photosensitive region of the photodetector to minimize the amount of reflection. The composite layer comprises a silicon nitride layer... | 04/29/2003 |
| 6538730 | Defect detection system Scattered radiation from a sample surface is collected by means of a collector that collects radiation substantially symmetrically about a line normal to the surface. The collected radiation is directed to channels at different azimuthal angles so that in... | 03/25/2003 |
| 6515433 | Gas discharge fluorescent device Sputtering of the cathodes of a cold cathode fluorescent lamp is reduced or eliminated by removing electrodes altogether from the sealed envelope containing the gaseous medium. Electric field is then applied by means of electrically conductive members out... | 02/04/2003 |
| 6498879 | Polarization-independent, environmentally stable optical fiber narrow band multi-window wavelength division multiplexer based on biconical tapered fusion coupler technology A structure and method are provided to improve stability of a multi-window dense wavelength division multiplexers and to provide polarization-independent multi-window dense wavelength division multiplexers. In one embodiment, the coupler region of a multi... | 12/24/2002 |
| 6486744 | Low phase noise voltage-controlled oscillator and method of using the same A low phase noise voltage-controlled oscillator (VCO) and method are provided. The VCO comprises a negative resistance generator and a resonator that reduces VCO phase noise.... | 11/26/2002 |
| 6483580 | Spectroscopic scatterometer system Before the diffraction from a diffracting structure on a semiconductor wafer is measured, where necessary, the film thickness and index of refraction of the films underneath the structure are first measured using spectroscopic reflectometry or spectroscop... | 11/19/2002 |
| 6480662 | Design of a variable attenuator and fabrication of its shutter element A variable attenuator employs a shutter element that is inserted into the path of a beam of radiation. The shutter element comprises a transparent substrate with an opaque layer formed on top of the substrate. The opaque layer forms a pattern in the shape... | 11/12/2002 |
| 6462689 | Digital to analog converter (DAC) having an adjustable dynamic range A digital to analog converter (DAC) has an adjustable dynamic range. Specifically, the adjustable DAC has a control port that receives a control signal indicative of the dynamic range, and the DAC produces an analog signal of the specified dynamic range i... | 10/08/2002 |
| 6452326 | Cold cathode fluorescent lamp and display A light transmitting container is used to house a cold cathode fluorescent lamp (CCFL) to reduce heat loss and to increase the luminous efficiency of the lamp. An electrical connector configuration is connected to an electrode of the lamp and adapted to b... | 09/17/2002 |
| 6437311 | Photodetector and device employing the photodetector for converting an optical signal into an electrical signal An anti-reflective coating having a composite layer of silicon nitride and silicon dioxide may be formed over the entire photosensitive region of the photodetector to minimize the amount of reflection. The composite layer comprises a silicon nitride layer... | 08/20/2002 |
| 6384910 | Sample inspection system A curved mirrored surface is used to collect radiation scattered by a sample surface and originating from a normal illumination beam and an oblique illumination beam. The collected radiation is focused to a detector. Scattered radiation originating from t... | 05/07/2002 |
| 5419982 | Corner tab termination for flat-cell batteries A new flat cell battery design is provided which incorporates a cathode and an anode terminal which are located in respective corners of a battery body. By locating the cathode and anode terminals in respective corners of the flat cell battery, the storag... | 05/30/1995 |
| 5405715 | Battery packaging and interconnection scheme A terminal for a battery assembly is adapted to lose electrical conduct with a battery cell in the presence of gases within a battery chamber thereby disabling the battery. The disabling of the battery assembly gives the user an indication that the batter... | 04/11/1995 |
| 5358539 | Method for making a battery assembly A terminal for a battery assembly is adapted to lose electrical conduct with a battery cell in the presence of gases within a battery chamber thereby disabling the battery. The disabling of the battery assembly gives the user an indication that the batter... | 10/25/1994 |
| 5067681 | Copy holder The copy holder described is particularly suitable for use in information entry by means of a keyboard and computer monitor. The copy holder is of simple design and includes a clip, a connecting rod and two rod stands for connecting the rod to supporting ... | 11/26/1991 |
| 5036186 | Shading correction system for use with an optical scanner An improved shading correction system is disclosed where the light intensity variations of the light sources are sensed and are fed back to the shading correction system for improved shading correction. Such feedback action may be applied both during the ... | 07/30/1991 |
| 4481612 | Seismic surveying using shear waves The shear wave source of this invention includes a housing and means for applying forces to the shot hole wall. The force applying means applies a number of forces to the shot hole wall along lines normal to a plane close to the shot hole. No pressure wav... | 11/06/1984 |
| 4431215 | Riser connector Two adjacent riser pipes having substantially a common axis are connected by the riser connector of this invention in the manner described below. A connector box, adapted to be attached to the end of one of the pipes, has an abutment surface and adjacent to it... | 02/14/1984 |
| 4410062 | Tuned vibrator with a compliant connection to the base plate To increase the energy of seismic waves transmitted by a vibrator, one or more compliant members are connected between the driver and the base plate of the vibrator. The compliance of the compliant member is such that it is substantially rigid at the natu... | 10/18/1983 |
| 4361808 | Dielectric constant well logging with current and voltage electrodes This invention provides for methods and systems for measuring the dielectric constant of an earth formation. In a preferred embodiment, an alternating current is passed through a portion of the formation and a reference resistor in series with the portion... | 11/30/1982 |
| 4353431 | Recoil reducing system for gas guns Disclosed herein are improvements in a recoil reducing system of a gas gun which create pulses in a liquid medium by introducing therein gas under high pressure. The release of high pressure gas from the barrel of such a gas gun causes recoil of the barre... | 10/12/1982 |
| 4295213 | Composite seismic signal This invention provides for transmission of composite swept sine wave seismic signals wherein auto-correlation side lobes of such signals are reduced. The frequency spectrum of a desired swept sine wave seismic signal is divided into a number of consecuti... | 10/13/1981 |
| 4211301 | Marine seismic transducer A method and apparatus for seismic prospecting which utilizes two transducer plates that are spaced apart, with two sets of bellows placed in between and sealingly attached thereto, to transmit electrically controlled hydraulic pressure signals onto the t... | 07/08/1980 |
