| Patent Number |
Title Of Patent |
Date Issued |
| 5958780 |
Method for marking and identifying liquids |
September 28, 1999 |
| Methods for marking a liquid and methods and systems for identifying marked liquids. A liquid can be marked for identification purposes with at least a first marker and a second marker. Each of the markers is miscible with the liquid. The markers are mixed in the liquid so that the ratio |
| 5750995 |
Methods and devices for fuel characterization and optimal fuel identification on-site at a fuel |
May 12, 1998 |
| Method and devices for fuel characterization and optimization on-site at a fuel delivery dispenser are disclosed. Fuel properties associated with a fuel sample of a fuel can be measured by mid-infrared analysis and displayed. Pre-determined preferred values for the fuel properties for th |
| 5569922 |
Portable fuel analyzer for the diagnosis of fuel-related problems on-site at the vehicle service |
October 29, 1996 |
| Method and apparatus for diagnosing fuel-related problems at the site of vehicle servicing and matching fuels to new engine designs. Fuel properties associated with a fuel sample can be measured with mid-infrared analysis. The measured fuel property values can be compared with pre-de |
| 5422495 |
Optical sensor having a floatation means for detecting fluids through refractive index measureme |
June 6, 1995 |
| The present invention provides methods and systems for sensing the presence of fluids, such as hydrocarbon-based liquids and/or water, in an ambient environment based upon their light refractive properties. An optical waveguide is deployed in the environment (or a sample chamber disposed |
| 5330073 |
Gasoline dispenser leak detectors and automatic shut-off systems |
July 19, 1994 |
| Methods and systems are disclosed for controlling dispensation of hydrocarbon fuels from storage tanks and the like, by employing a sensor in an environment proximal to the dispenser. The sensor preferably includes an optical waveguide having a central axis along which light can tran |
| 5264368 |
Hydrocarbon leak sensor |
November 23, 1993 |
| Method and apparatus for detecting and/or monitoring the presence of hydrocarbons in a fluid medium at a remote location, by sensing the presence of hydrocarbon-based fluid in the fluid medium in the remote location, generating a signal indicative of the sensed fluid, and transmittin |
| 5245869 |
High accuracy mass sensor for monitoring fluid quantity in storage tanks |
September 21, 1993 |
| A mass sensoring system for monitoring the amount of fluid in a storage tank with an accuracy high enough to determine both the quantity present and the potential loss of fluid at a loss rate of 0.05 gal/hr or at least 0.1 gal/hr. The system utilizes a pressure sensor positioned at the b |
| 5225679 |
Methods and apparatus for determining hydrocarbon fuel properties |
July 6, 1993 |
| Method and apparatus for monitoring hydrocarbon-based fuel properties by measuring the presence and amount of fuel component molecules in the fuel solution. Detection is made of absorption related to signature vibrational modes associated with the fuel component molecules when excited in |
| 5139334 |
Hydrocarbon analysis based on low resolution raman spectral analysis |
August 18, 1992 |
| A system is disclosed for measuring properties of samples associated with the distribution of hydrocarbons in the sample. The system includes a low resolution laser Raman spectrometer coupled to photodetectors that integrate the intensity of the scattered Raman radiation. The system |
| 5054487 |
Laser systems for material analysis based on reflectance ratio detection |
October 8, 1991 |
| Systems and methods for non-invasive material analysis are disclosed in which a material (e.g., a liquid such as blood) is illuminated at a plurality of discrete wavelengths. Measurements of the intensity of reflected light at such wavelengths are taken, and an analysis of reflection |
| 5053033 |
Inhibition of restenosis by ultraviolet radiation |
October 1, 1991 |
| Restenosis following angioplasty can be inhibited by reducing the proliferation of smooth muscle cells in the blood vessel walls at an angioplasty site, and such reduction in cell proliferation can be accomplished by irradiating the angioplasty site with radiation in the ultraviolet |
