Patents by Inventor Bruce A. Littlefield

Bruce A. Littlefield 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: 20200129473
    Abstract: The invention features methods for treating and preventing cancer (e.g., an estrogen receptor-positive (ER+) breast cancer) in a patient in need thereof by administering eribulin (e.g., eribulin mesylate) in combination with a cyclin dependent kinase (CDK) inhibitor.
    Type: Application
    Filed: July 23, 2018
    Publication date: April 30, 2020
    Inventors: Bruce A. LITTLEFIELD, Gary HENDLER
  • Publication number: 20190282541
    Abstract: The invention features methods for treating and preventing cancer (e.g., a hormone sensitive cancer) in a patient in need thereof by administering eribulin (e.g., eribulin mesylate) in combination with a histone deacetylase (HDAC) inhibitor.
    Type: Application
    Filed: July 20, 2017
    Publication date: September 19, 2019
    Inventors: Bruce A. LITTLEFIELD, Gary HENDLER
  • Patent number: 9637795
    Abstract: The invention provides methods for predicting the efficacy of eribulin, an analog thereof, or a pharmaceutically acceptable salt thereof (e.g., eribulin mesylate), in the treatment of a subject suffering from breast cancer by determining the level of particular biomarkers in a sample derived from the subject.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: May 2, 2017
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Sergei I. Agoulnik, Michael Chapman Byrne, Bruce A. Littlefield
  • Publication number: 20170100367
    Abstract: The invention features methods and kits for use in treating cancer in a patient in need thereof by administering eribulin or a pharmaceutically-acceptable salt thereof (e.g., eribulin mesylate) prior to a second agent.
    Type: Application
    Filed: May 27, 2015
    Publication date: April 13, 2017
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Makoto ASANO, Bruce A. LITTLEFIELD, Junji MATSUI, Martin OLIVO, Yoichi OZAWA, Yanke YU
  • Publication number: 20170071903
    Abstract: Methods for treating cancer (e.g., breast cancer, lung cancer, pancreatic cancer, primitive neuroectodermal tumors, lung cancer, ovarian cancer, endometrial cancer, pharyngeal cancer, esophageal cancer, and sarcoma) in a subject (such as an human patient) in need thereof by administering eribulin (e.g., eribulin mesylate, i.e., E7389, Halaven) in combination with one or more mammalian target of rapamycin (mTOR) inhibitors (e.g., everolimus, ridaforolimus, and temsirolimus), and kits therefor are provided.
    Type: Application
    Filed: March 2, 2015
    Publication date: March 16, 2017
    Inventors: Yasuhiro FUNAHASHI, Bruce A. Littlefield, Toshimitsu UENAKA
  • Patent number: 8097648
    Abstract: The invention provides methods and compositions for use in treating diseases associated with excessive cellular proliferation, such as cancer.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: January 17, 2012
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Bruce A. Littlefield, Murray J. Towle, Boris M. Seletsky, Melvin J. Yu, Wanjun Zheng
  • Publication number: 20110172446
    Abstract: The invention provides methods and compositions for use in treating diseases associated with excessive cellular proliferation, such as cancer, and intermediates for the synthesis of such compositions.
    Type: Application
    Filed: August 12, 2010
    Publication date: July 14, 2011
    Inventors: Bruce A. Littlefield, Boris M. Seletsky, Murray J. Towle, Melvin J. Yu, Wanjun Zheng
  • Publication number: 20100190843
    Abstract: Chemotherapeutic agents that interfere with microtubule assembly or disassembly in the cell are potent inhibitors of cell replication. Examples of such agents include halichondrin B analogs. It has been shown that the susceptibility of certain cancers to analogs of halichondrin B correlates with the expression of particular tubulin isotypes or other microtubule-associated proteins such as MAP-4 and stathmin. Correlations such as these may be used in identifying patients suitable for treatment using a particular chemotherapeutic agent. Such a system avoids treating patients with cytotoxic compounds where there is a minimal or no effect on the cancer. The invention also provides a system of establishing these correlations for different compounds and cancer types. The system will be particularly useful in establishing correlations between anti-microtubule agents and cancers such as lung, breast, and ovarian cancer. Kits and reagents useful in practicing the invention are also provided.
    Type: Application
    Filed: August 3, 2009
    Publication date: July 29, 2010
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Sergei Agoulnik, Galina Kuznetsov, Bruce A. Littlefield
  • Publication number: 20090104285
    Abstract: The invention provides methods and compositions for use in treating diseases associated with excessive cellular proliferation, such as cancer.
    Type: Application
    Filed: December 22, 2008
    Publication date: April 23, 2009
    Inventors: Bruce A. Littlefield, Murray J. Towle
  • Patent number: 7470720
    Abstract: The invention provides methods and compositions for use in treating diseases associated with excessive cellular proliferation, such as cancer.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: December 30, 2008
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Bruce A. Littlefield, Murray J. Towle
  • Publication number: 20070196418
    Abstract: The invention provides devices and methods for delivering therapeutic agents to patients.
    Type: Application
    Filed: July 29, 2004
    Publication date: August 23, 2007
    Inventors: Michael Lewis, Bruce Littlefield, J. Carter
  • Publication number: 20060236000
    Abstract: A method and system of split-streaming direct memory access (DMA) data transfer can transfer N words of data from a source device to two different sets of memory locations using only N data read cycles and 2N data write cycles. In a single data word transfer mode, a data read operation on the memory bus is followed by two consecutive data write cycles wherein the same data is written to two different memory addresses. In a data burst mode, a data burst read operation is followed by a series of paired data write cycles, wherein in each pair of data write cycles, one of the data words is written to two different memory addresses.
    Type: Application
    Filed: April 15, 2005
    Publication date: October 19, 2006
    Inventors: John Falkowski, Bruce Littlefield, Hussein Mecklai, Stanley Reinhold
  • Publication number: 20060154312
    Abstract: Chemotherapeutic agents that interfere with microtubule assembly or disassembly in the cell are potent inhibitors of cell replication. Examples of such agents include halichondrin B analogs. It has been shown that the susceptibility of certain cancers to analogs of halichondrin B correlates with the expression of particular tubulin isotypes or other microtubule-associated proteins such as MAP-4 and stathmin. Correlations such as these may be used in identifying patients suitable for treatment using a particular chemotherapeutic agent. Such a system avoids treating patients with cytotoxic compounds where there is a minimal or no effect on the cancer. The invention also provides a system of establishing these correlations for different compounds and cancer types. The system will be particularly useful in establishing correlations between anti-microtubule agents and cancers such as lung, breast, and ovarian cancer. Kits and reagents useful in practicing the invention are also provided.
    Type: Application
    Filed: December 7, 2005
    Publication date: July 13, 2006
    Inventors: Sergei Agoulnik, Galina Kuznetsov, Bruce Littlefield
  • Publication number: 20060148014
    Abstract: Chemotherapeutic agents that interfere with microtubule assembly or disassembly in the cell are potent inhibitors of cell replication. Examples of such agents include hemiasterlin analogs. It has been shown that the susceptibility of certain cancers to analogs of hemiasterlin correlates with the expression of particular tubulin isotypes or other microtubule-associated proteins such as MAP-4 and stathmin. Correlations such as these may be used in identifying patients suitable for treatment using a particular chemotherapeutic agent. Such a system avoids treating patients with cytotoxic compounds where there is a minimal or no effect on the cancer. The invention also provides a system of establishing these correlations for different compounds and cancer types. The system will be particularly useful in establishing correlations between anti-microtubule agents and cancers such as lung, breast, and ovarian cancer. Kits and reagents useful in practicing the invention are also provided.
    Type: Application
    Filed: December 7, 2005
    Publication date: July 6, 2006
    Inventors: Sergei Agoulnik, Galina Kuznetsov, Bruce Littlefield
  • Publication number: 20060134602
    Abstract: The present invention provides a system for measuring the cytotoxicity of a test compound against quiescent cells. The inventive methods and reagents may also be used to determine whether a compound, such as a chemotherapeutic agent, will have undesired toxicity toward normal tissues, which generally do not include a significant number of cells that are proliferating. Thus, the assay of the invention can be used to identify in vitro compounds that demonstrate a good therapeutic index, thus, accelerating the development of drugs that are clinically useful.
    Type: Application
    Filed: January 13, 2005
    Publication date: June 22, 2006
    Inventors: Bruce Littlefield, Kathleen Salvato, Laura Rudolph-Owen
  • Publication number: 20060104984
    Abstract: The invention provides methods and compositions for use in treating diseases associated with excessive cellular proliferation, such as cancer.
    Type: Application
    Filed: November 18, 2005
    Publication date: May 18, 2006
    Inventors: Bruce Littlefield, Murray Towle
  • Publication number: 20050253462
    Abstract: An integrated circuit having two or more power domains that include load circuits in different portions of the integrated circuit is disclosed. In order to conserve power, the circuits in one of the power domains are shut down by disconnecting the power source serving that domain. The load circuits in each power domain are buffered from the load circuits in other power domains by buffer cells. The buffer cells reduce leakage currents in the power domain that is shut down, by restricting data signals from the “live” power domain from reaching the shut-down power domain, and further by providing predetermined voltage signals to the load circuits in the shut-down power domain that are selected to minimize leakage currents in the inactive load circuits. The invention further provides a corresponding method for reducing power consumption in an integrated circuit having at least two power domains separated by a buffer cell.
    Type: Application
    Filed: February 7, 2005
    Publication date: November 17, 2005
    Applicant: Agere Systems Inc.
    Inventors: John Falkowski, Bruce Littlefield, Douglas Lopata, Hussein Mecklai, Stanley Reinhold
  • Publication number: 20040198806
    Abstract: The invention provides methods and compositions for use in treating diseases associated with excessive cellular proliferation, such as cancer.
    Type: Application
    Filed: October 16, 2003
    Publication date: October 7, 2004
    Inventors: Bruce A. Littlefield, Murray J. Towle
  • Patent number: 6653341
    Abstract: The invention provides methods and compositions for use in treating diseases associated with excessive cellular proliferation, such as cancer.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: November 25, 2003
    Assignee: Eisai Co., Ltd.
    Inventors: Bruce A. Littlefield, Murray J. Towle
  • Patent number: 6469182
    Abstract: Novel intermediates of the formula They are used in the preparation of macrocyclic analogs.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: October 22, 2002
    Assignee: Eisai Co., Ltd.
    Inventors: Bruce A. Littlefield, Monica H. Palme, Boris M. Seletsky, Murray J. Towle, Melvin J. Yu, Wanjun Zheng