Patents Assigned to Polytechnic Institute of New York
  • Patent number: 4663269
    Abstract: Method of forming highly sensitive, high resolution positive photoresist compositions that are developed from polycarbonates derived from t-diols and various diphenols and homopolycarbonates from t-diols, mixed with 2-10% of onium salts wtih complex metal halide counterions. The high sensitivity of the photoresist compositions is due to the thermodynamic stabilities of the resulting incipient dicarbocations and dienes.
    Type: Grant
    Filed: August 7, 1985
    Date of Patent: May 5, 1987
    Assignee: Polytechnic Institute of New York
    Inventors: Subhash C. Narang, Shabbir Attarwala
  • Patent number: 4656235
    Abstract: Siloxane-containing polyimides, useful as conformal coatings for electrical devices, can be synthesized via a novel Diels-Alder reaction in which bis-maleimide derivatives are polymerized with siloxane-containing bis-furan derivatives. The Diels-Alder adduct can be aromatized, and applied as a coating to a mineral substrate. The aromatized, polyimide coating can be cured thermally without additional cyclization on the substrate.
    Type: Grant
    Filed: September 5, 1985
    Date of Patent: April 7, 1987
    Assignee: Polytechnic Institute of New York
    Inventors: Giuliana C. Tesoro, Vinod R. Sastri, Subash C. Narang
  • Patent number: 4105362
    Abstract: A fluid flow energy conversion system is disclosed which employs a pair of vortex generators to focus the broad diffuse flow intercepted by each planform into concentrated vortices of higher energy density; turbines are oriented in the vortices to convert the vortex energy into mechanical energy to thus provide power output substantially higher than otherwise achievable by the turbines alone; the illustrative vortex generators are delta planforms deployed in mirror symmetric fashion with their apices adjacent to define the apex of a horizontal "V" configuration such that the apex points into the wind, the plane of symmetry aligns with the wind direction, and the angle of the "V" provides the required angle of attack for each planform relative to the wind axis. A three point mounting system employing a pivot near the apex and wheels adjacent the trailing edge, provides the required azimuthal mobility.
    Type: Grant
    Filed: June 6, 1977
    Date of Patent: August 8, 1978
    Assignee: Polytechnic Institute of New York
    Inventor: Pasquale M. Sforza
  • Patent number: 4073726
    Abstract: There is provided a process for removing trinitrotoluene from waste water resulting from the manufacture of trinitrotoluene, the process comprising forming an admixture of the waste water and an amino group containing compound of the formula (C.sub.n H.sub.2n+1).sub.m (NH(CH.sub.2).sub.x).sub.y NH.sub.z, wherein n is 1 to 25, m is 1 to 3, x is 1 to 5, y is 0 to 5, z is 0 to 2 or the amine and a cationic compound of the formula (C.sub.n H.sub.2n+1).sub.4 N.sup.+ X.sup.-, wherein n is 1 to 25, and X.sup.- is Cl.sup.-, Br.sup.-, SO.sub.4 H.sup.- ; stirring the mixture to form a water insoluble reaction product of trinitrotoluene, and recovering the reaction product from the substantially trinitrotoluene free waste water.
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: February 14, 1978
    Assignee: Polytechnic Institute of New York
    Inventors: Yoshiyuki Okamoto, Joseph Y. Wang, Eng J. Chou
  • Patent number: 4047832
    Abstract: Fluid flow energy conversion systems employing aerodynamic flow-separation vortex generation for focusing the kinetic energy of flow in the working area of the turbine are disclosed herein in the context of wind power plants. As a consequence of this augmentation, fluid velocity acting on the rotor is increased by a substantial amount over the free stream velocity, resulting in substantial increases in power output for a given turbine configuration. The illustrative embodiments include simple flow separation, vortex augmenting surfaces, such as those found in delta planforms which in this context generate vortices and therefore function as aerodynamic lenses; these surfaces are oriented to the wind turbine so that generated vortices are directed at the turbine blades. The latter are configured to be driven by the vortex and drive in turn electrical or other power generating devices or machines.
    Type: Grant
    Filed: April 3, 1975
    Date of Patent: September 13, 1977
    Assignee: Polytechnic Institute of New York
    Inventor: Pasquale M. Sforza