Patents Represented by Attorney J. A. Marasco
  • Patent number: 5578488
    Abstract: A method of degrading trinitrotoluene (TNT) includes contacting the TNT with intra-amoebic isolate CR-1, ATCC 75528.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: November 26, 1996
    Assignee: Martin Marietta Energy System, Inc.
    Inventors: Richard L. Tyndall, Arpad Vass
  • Patent number: 5558788
    Abstract: A laser ablation apparatus having a laser source outputting a laser ablation beam includes an ablation chamber having a sidewall, a beam divider for dividing the laser ablation beam into two substantially equal halves, and a pair of mirrors for converging the two halves on a surface of the target from complementary angles relative to the target surface normal, thereby generating a plume of ablated material emanating from the target.
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: September 24, 1996
    Assignee: Martin Marietta Energy Systems, Inc.
    Inventor: Douglas N. Mashburn
  • Patent number: 5511537
    Abstract: An article adapted for selectively utilizing solar radiation comprises an absorptive surface and a reflective surface, the absorptive surface and the reflective surface oriented to absorb solar radiation when the sun is in a relatively low position, and to reflect solar radiation when the sun is in a relatively high position.
    Type: Grant
    Filed: May 12, 1994
    Date of Patent: April 30, 1996
    Assignee: Martin Marietta Energy Systems, Inc.
    Inventor: Lee M. Hively
  • Patent number: 5496522
    Abstract: The present invention relates to chemical sensor and biosensor probes for measuring low concentration of metals and metal ions in complex samples such as biological fluids, living cells, and environmental samples. More particularly the present invention relates to a gel-based Indo-1 and Fura-2 chemical sensor probes for the measurement of low concentrations of calcium, cadmium, magnesium and the like. Also disclosed is a detector device using the sensors of the present invention.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: March 5, 1996
    Assignee: Martin Marietta Energy Systems, Inc.
    Inventors: Tuan Vo-Dinh, Pierre Viallet
  • Patent number: 5493730
    Abstract: Apparatus and methods for detecting the permeation of hazardous or toxic chemicals through protective clothing are disclosed. The hazardous or toxic chemicals of interest do not possess the spectral characteristic of luminescence. The apparatus and methods utilize a spectrochemical modification technique to detect the luminescence quenching of an indicator compound which upon permeation of the chemical through the protective clothing, the indicator is exposed to the chemical, thus indicating chemical permeation.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: February 27, 1996
    Assignee: Martin Marietta Energy Systems, Inc.
    Inventor: Tuan Vo-Dinh
  • Patent number: 5484730
    Abstract: A method of eluting trinitrotoluene (TNT) from soil using a dispersant from bacterial intra-amoebic isolate 1s, ATCC 75229.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: January 16, 1996
    Assignee: Martin Marietta Energy Systems, Inc.
    Inventors: Richard L. Tyndall, Arpad Vass
  • Patent number: 5449618
    Abstract: Methods of degrading napalm and/or trinitrotoluene involve contacting the waste with specific intra-amoebic isolates of ATCC 40908 and/or dispersants derived therefrom. Useful isolates include is deposited as ATCC 77529, NAP-1 deposited as ATCC 77526 and 13 deposited as ATCC 77527.
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: September 12, 1995
    Assignee: Martin Marietta Energy Systems, Inc.
    Inventors: Richard L. Tyndall, Arpad Vass
  • Patent number: 5270189
    Abstract: A fluidized bed reactor system which utilizes a fluid phase, a retained fluidized primary particulate phase, and a migratory second particulate phase. The primary particulate phase is a particle such as a gel bead containing an immobilized biocatalyst. The secondary particulate phase, continuously introduced and removed in either cocurrent or countercurrent mode, acts in a secondary role such as a sorbent to continuously remove a product or by-product constituent from the fluid phase. Introduction and removal of the sorbent phase is accomplished through the use of feed screw mechanisms and multivane slurry valves.
    Type: Grant
    Filed: November 21, 1991
    Date of Patent: December 14, 1993
    Assignee: Martin Marietta Energy Systems, Inc.
    Inventor: Charles D. Scott
  • Patent number: 5260520
    Abstract: Apparatus for weighing a vehicle in motion is provided by employing a plurality of elongated fiber-optic sensors defined by an optical fiber embedded in an encasement of elastomeric material and disposed parallel to each other on the roadway in the path of moving vehicles. Each fiber-optic sensor is provided with contact grid means which can be selectively altered to provide the fiber-optic sensors with sensitivities to vehicular weight different from each other for weighing vehicles in an extended weight range. Switch means are used in conjunction with the fiber-optic sensors to provide signals indicative of the speed of the moving vehicle, the number of axles on the vehicle, weight distribution, tire position, and the wheelbase of the vehicle. The use of a generally N-shaped configuration of switch means also provides a determination of the number of tires on each axle and the tire footprint.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: November 9, 1993
    Assignee: Martin Marietta Energy Systems, Inc.
    Inventors: Jeffrey D. Muhs, John K. Jordan, Kenneth W. Tobin, Jr., John V. LaForge
  • Patent number: 5248484
    Abstract: A reactor vessel for reacting a solid particulate with a liquid reactant has a centrifugal pump in circulatory flow communication with the reactor vessel for providing particulate attrition, resulting in additional fresh surface where the reaction can occur.
    Type: Grant
    Filed: September 15, 1992
    Date of Patent: September 28, 1993
    Assignee: Martin Marietta Energy Systems, Inc.
    Inventors: Charles D. Scott, Brian H. Davison
  • Patent number: 5245833
    Abstract: A refrigeration air conditioning system utilizing a liquid over-feeding operation is described. A liquid refrigerant accumulator-heat exchanger is placed in the system to provide a heat exchange relationship between hot liquid refrigerant discharged from condenser and a relatively cool mixture of liquid and vaporous refrigerant discharged from the evaporator. This heat exchange relationship substantially sub-cools the hot liquid refrigerant which undergoes little or no evaporation across the expansion device and provides a liquid over-feeding operation through the evaporator for effectively using 100 percent of evaporator for cooling purposes and for providing the aforementioned mixture of liquid and vaporous refrigerant.
    Type: Grant
    Filed: May 19, 1992
    Date of Patent: September 21, 1993
    Assignee: Martin Marietta Energy Systems, Inc.
    Inventors: Viung C. Mei, Fang C. Chen
  • Patent number: 5243464
    Abstract: A light absorbing article comprised of a composite of carbon-bonded carbon fibers, prepared by: blending carbon fibers with a carbonizable organic powder to form a mixture; dispersing the mixture into an aqueous slurry; vacuum molding the aqueous slurry to form a green article; drying and curing the green article to form a cured article; and, carbonizing the cured article at a temperature of at least about 1000.degree. C. to form a carbon-bonded carbon fiber light absorbing composite article having a bulk density less than 1 g/cm.sup.3.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: September 7, 1993
    Assignee: Martin Marietta Energy Systems, Inc.
    Inventors: Robert J. Lauf, Clyde Hamby, Jr., M. Alfred Akerman, Roland D. Seals
  • Patent number: 5186913
    Abstract: A generator system for providing a carrier-free radioisotope in the form of an acid comprises a chromatography column in tandem fluid connection with an ion exchange column, the chromatography column containing a charge of a radioactive parent isotope. The chromatography column, charged with a parent isotope, is eluted with an alkali metal salt solution to generate the radioisotope in the form of an intermediate solution, which is passed through the ion-exchange column to convert the radioisotope to a carrier-free acid form.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: February 16, 1993
    Assignee: Martin Marietta Energy Systems, Inc.
    Inventors: Furn F. Knapp, Jr., Edward C. Lisic, Saed Mirzadeh, Alvin P. Callahan
  • Patent number: 4999810
    Abstract: A method and apparatus for a Surface-Enhanced Raman Optical Data Storage (SERODS) System is disclosed. A medium which exhibits the Surface Enhanced Raman Scattering (SERS) phenomenon has data written onto its surface of microenvironment by means of a write-on procedure which disturbs the surface or microenvironment of the medium and results in the medium having a changed SERS emission when excited. The write-on procedure is controlled by a signal that corresponds to the data to be stored so that the disturbed regions on the storage device (e.g., disk) represent the data. After the data is written onto the storage device it is read by exciting the surface of the storage device with an appropriate radiation source and detecting changes in the SERS emission to produce a detection signal. The data is then reproduced from the detection signal.
    Type: Grant
    Filed: October 19, 1989
    Date of Patent: March 12, 1991
    Assignee: Martin Marietta Energy Systems, Inc.
    Inventor: Tuan Vo-Dinh