Patents by Inventor Theodore M. Bloomstein

Theodore M. Bloomstein has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20100089443
    Abstract: Methods, devices, and compositions related to organic solar cells, sensors, and other photon processing devices are disclosed. In some aspects, an organic semiconducting composition is formed with nano-sized features, e.g., a layer conforming to a shape exhibiting nano-sized tapered features. Such structures can be formulated as an organic n-type and/or an organic p-type layer incorporated in a device that exhibits enhanced conductor mobility relative to conventional structures such as planar layered formed organic semiconductors. The nanofeatures can be formed on an exciton blocking layer (“EBL”) surface, with an organic semiconducting layer deposited thereon to conform with the EBL's surface features. A variety of material possibilities are disclosed, as well as a number of different configurations. Such organic structures can be used to form flexible solar cells in a roll-out format.
    Type: Application
    Filed: September 24, 2009
    Publication date: April 15, 2010
    Applicant: Massachusetts Institute of Technology
    Inventors: Theodore M. Bloomstein, Roderick R. Kunz, Theodore M. Lyszczarz, Vladimir Bulovic
  • Patent number: 6833234
    Abstract: Methods for the preparation of multilayered resists are described. To efficiently pattern large contiguous areas rapidly, a procedure has been developed using spot-size modulation of the focused laser beam to more efficiently pattern interior portions. Critical portions at the perimeter are patterned at high resolutions. The spot-size is progressively increased towards the interior allowing a controlled transition to coarser spot-sizes without impacting the exposure dose in critical portions. Patterning times are significantly reduced since in effect shells are patterned. An algorithm is defined to subdivide a layer into different zones, determine the appropriate focused spot-sizes used for each zone, and define the laser scan trace within a zone to enable efficient patterning of broad areas in positive tone resists.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: December 21, 2004
    Assignee: Massachusetts Institute of Technology
    Inventors: Theodore M. Bloomstein, Roderick R. Kunz, Stephen T. Palmacci
  • Patent number: 6777170
    Abstract: Methods for the preparation of multilayered resists are described. A first layer of photoresist is deposited onto a substrate. First portions of the first layer are exposed to a first dose of radiant energy. A second layer of photoresist is deposited at atop the first layer and second portions of the second layer are exposed to a second varied dose of radiant energy. The dose is modulated over different portions of a layer to preferentially enhance development within the interior of the structure to reduce total development times.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: August 17, 2004
    Assignee: Massachusetts Institute of Technology
    Inventors: Theodore M. Bloomstein, Roderick R. Kunz, Stephen T. Palmacci
  • Patent number: 6730256
    Abstract: Methods for the preparation of multilayered resists include exposure of the a first layer to radiation followed by exposure to an oxidizing agent. The oxidizing agent alters the surface characteristics of the first resist layer such that it is rendered more hydrophilic than the original resist layer. A second layer of resist is then applied to the oxidized surface of the first resist layer and exposed to radiation. This process can be repeated for thousands of coating layers, thereby permitting stereolithographic patterning of parts and construction of micromachines. A final treatment with a dissolution solution will dissolve unwanted resist material. Dependent upon the type of resist material used in the multilayered resist, the dissolution solution can remove the radiation exposed areas, e.g., a positive resist, or remove unexposed areas, e.g., a negative resist.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: May 4, 2004
    Assignee: Massachusetts Institute of Technology
    Inventors: Theodore M. Bloomstein, Roderick R. Kunz, Stephen T. Palmacci
  • Patent number: 6641268
    Abstract: An interference projection system for use with lithography using quasi-coherent sources, which has a non-diffractive beam splitting module and a non-diffractive module to cause interference of two or more beams, the modules combining to form interfering beams having the same orientation on a target surface. Two etalons are used to split a beam, to form two beams of the same orientation, strength and polarization. One or more pairs of mirrors cause the beam to interfere.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: November 4, 2003
    Assignee: Massachusetts Institute of Technology
    Inventors: Theodore M. Bloomstein, Michael Switkes, Mordechai Rothschild
  • Publication number: 20020149751
    Abstract: An interference projection system for use with lithography using quasi-coherent sources, which has a non-diffractive beam splitting module and a non-diffractive module to cause interference of two or more beams, the modules combining to form interfering beams having the same orientation on a target surface. Two etalons are used to split a beam, to form two beams of the same orientation, strength and polarization. One or more pairs of mirrors cause the beam to interfere.
    Type: Application
    Filed: November 26, 2001
    Publication date: October 17, 2002
    Inventors: Theodore M. Bloomstein, Michael Switkes, Mordechai Rothschild
  • Patent number: 5389196
    Abstract: A method for producing a three-dimensional object includes the steps of providing an interface plane within a chamber and generating a beam of radiant energy having varied levels of beam energy density. The beam is directed to selectively expose a pattern of address points on the interface plane to the beam of radiant energy for a limited duration. Conditions are established in the chamber to enable the beam to induce a micro-chemical reaction at the interface plane at a rate which serves to form a portion of the three-dimensional object. A significant feature of the invention is that the micro-chemical reaction is substantially binary with respect to the beam energy density. That is, the reaction is either substantially "on" or substantially "off.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: February 14, 1995
    Assignee: Massachusetts Institute of Technology
    Inventors: Theodore M. Bloomstein, Daniel Ehrlich, Anita M. Flynn
  • Patent number: 5341498
    Abstract: An operator MUX interface (OMI) (102) includes a data base manager (203) that manages at least two data bases. The first comprises a substantially non-temporary data base, and the second comprises a substantially temporary data base. The latter includes information from both the first data base, and other information as well. The data base manager (203) automatically alters the data storage structure of the second data base whenever either the data storage structure for the first data base is changed, or whenever new information must be added to the second data base, and the data storage structure of the second data base will not readily accommodate that addition.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: August 23, 1994
    Assignee: Motorola, Inc.
    Inventors: James M. Connor, Theodore M. Bloomstein, James A. Henderson, Jr., John W. Maher, James H. Errico
  • Patent number: 5175727
    Abstract: The present invention discloses a communication system network that comprises a plurality of communication systems and a processing multiplexer. The communication systems, which may be either conventional communication systems and/or trunked communication systems, transmit digitized audio signals and communication system data to the processing multiplexer. Based on signal destination data, which is part of the communication system data, the processing multiplexer processes the digitized signals and routes the resultant signals to the appropriate signal destinations of the communication systems.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: December 29, 1992
    Inventors: John W. Maher, James H. Errico, James A. Henderson, Jr., Theodore M. Bloomstein