Patents, Refereed Papers, Books, Conference and Other Publications

(As of August 2, 2006, 26 patents granted and 8 patents pending)

Granted Patents:

  1. W. Crue, E. B. Svedberg, R. E. Rottmayer, D. Litvinov, and S. Khizroev, “Low moment – high moment write pole with non-magnetic layer for establishing a magnetic discontinuity between layers of the write pole,” US patent application 20040066574, April 8, 2004, with Seagate, S/N 7,038, 882, issued to Seagate Technology, May 2, 2006
  2. D. Litvinov, R. W. Gustafson, and S. Khizroev, “Magnetic recording system which eliminates skew angle effect,” US patent, 60/221,494, filed Jul 26, 2001, with Seagate, S/N 6,987,637, issued to Seagate Technology on Jan 17, 2006
  3. S. Khizroev, N. Amin, B. Crue, R. Rottmayer, D. Litvinov, “Perpendicular recording head with trackwidth defined by plating thickness,” US patent, 60/161,690, filed Oct 24, 2000, S/N 6,898,053, issued to Seagate Technology on May 24, 2005
  4. D. Litvinov, N. Shukla, E. B. Svedberg, S. Khizroev, D. K. Weller, “Selective annealing of magnetic recording films,” US patent, 60/334,240, filed Nov 27, 2002, S/N 6,884,328, issued to Seagate Technology on April 26, 2005
  5. S. Khizroev, D. Litvinov, B. W. Crue, “Perpendicular magnetic recording head,” US patent, filed on Oct 24 2004, S/N 6,876,518, issued to Seagate Technology April 5 2005
  6. D. Litvinov, and S. Khizroev, “Magnetic recording head including background magnetic field generator,” International and US patents, 60/154,880, filed Sept 19, 2000, S/N 6,876,519, issued to Seagate Technology on April 5 2005
  7. S. Khizroev, J. A. Bain, M. H. Kryder, S. Khizroev, “Longitudinal magnetic recording heads with variable-length gaps,” International and US patents, 60/157,883, filed Oct 4, 2000, S/N 6,865,057, issued to Seagate Technology on Mar 8 2005
  8. D. Litvinov, and S. Khizroev, “Perpendicular magnetic recording apparatus for improved playback resolution having flux generating elements proximate the read element,” US patent, 60/306,802, filed Dec 17, 2001, with Seagate, S/N 6,888,700,  issued to Seagate on May 3, 2005
  9. S. Khizroev, E. C. Johns, D. Litvinov, “Gapless longitudinal magnetic recording head with flux cavity,” US patent, 60/174,524 filed on Jan. 5, 2000, 60/175,793 filed Jan 5, 2001, S/N 6,865,056, issued to Seagate Technology on Mar 8 2005
  10. A. M. Shukh, S. Khizroev, D. Litvinov, E. W. Singleton, “Perpendicular recording medium with antiferromagnetic exchange coupling in soft magnetic underlayers,” US patent, 60/227,943, filed Aug 24, 2001, S/N 6,818,330, issued to Seagate Technology on Nov 16 2004
  11. D. Litvinov, and S. Khizroev, “Perpendicular recording head with longitudinal magnetic field generator to facilitate magnetic switching,” US patent, 60/175,266, filed Jan 10, 2001, S/N 6,816,339, issued to Seagate Technology on Nov 9, 2004
  12. D. Litvinov, and S. Khizroev, “Multilayer perpendicular magnetic recording media with exchange decoupled spacer layers,” US patent, 60/192,050, filed Mar 23, 2001, S/N 6,630,255, issued to Seagate Technology on Oct 7 2003
  13. D. Litvinov, W. Crue, S. Khizroev, “Perpendicular recording head with return poles which reduce flux antenna effect,” US patent, 60/192,053, filed Mar 23, 2001, S/N 6,798,615, issued to Seagate Technology on Sep 28 2004
  14. S. Khizroev, M. H. Kryder, D. Litvinov, “Perpendicular recording head including concave tip,” US patent, 60/154,973, filed Sept 19, 2000, S/N 6,771,462, issued to Seagate Technology on Aug 3, 2004
  15. S. Khizroev, R. W. Gustafson, D. Litvinov, N. Shukla, “A perpendicular magnetic recording head with a magnetic shield to reduce side reading,” US patent, 60/257,125, filed Dec 20, 2001, S/N 6,738,233, issued to Seagate Technology on May 18 2004
  16. D. Litvinov, B. Crue, S. Khizroev, “Composite write pole for a magnetic recording head,” US patent, 60/276,154, filed Nov 29, 2001, S/N 6,721,131, issued to Seagate Technology on Apr 12 2004
  17. W. Crue, T. M. Crawford, S. Khizroev, D. Litvinov, “Perpendicular magnetic recording head having a flux focusing main pole,” US patent, 60/189,359, filed Mar 15, 2001, S/N 6,693,768, issued to Seagate Technology, Feb 17, 2004
  18. S. Khizroev, and D. Litvinov, “Perpendicular magnetic recording head with means for suppressing noise from soft magnetic underlayer of recording media,” US patent, 60/175,265, 60/175,271, 60/180,293, 60/189,365, 60/191,974, 60/191,775, filed Jan 10, 2001, S/N 6,667,848, issued to Seagate Technology on Dec 23 2003
  19. D. Litvinov, R. W. Gustafson, K. J. Howard, S. Khizroev, “Perpendicular magnetic recording media with laminated soft magnetic underlayer,” 60/180,415, filed Feb 2, 2001, S/N 6,660,357, issued to Seagate Technology on Dec 9 2003
  20. D. Litvinov, K. J. Howard, S. Khizroev, “Multilayer magnetic recording media with columnar microstructure for improved exchange decoupling,” US patent, 60/235,943, filed Sep 27, 2001, S/N 6,656,613, issued to Seagate Technology on Dec 2 2003
  21. D. Litvinov, and S. Khizroev, “Magnetic recording media including magnetically soft composite layer and method of making same,” US patent, 60/175,858, filed Jan 12, 2001, S/N 6,645,647, issued to Seagate Technology Nov 11, 2003
  22. S. Khizroev, W. Crue, D. Litvinov, “Perpendicular magnetic recording head with write pole which reduces flux antenna effect,” US patent, 60/175,320, filed Jan 10, 2001, S/N 6,646,827, issued to Seagate Technology on Nov 11, 2003
  23. D. Litvinov , S. Khizroev,  “Perpendicular recording head defining the trackwidth by material deposition thickness,” US patent, 60/167,936 (60,167,952), field Nov 29, 2000, S/N 6,560,069, issued to Seagate Technology on May 6, 2003
  24. D. Litvinov, S. Khizroev, M. H. Kryder, “Perpendicular magnetic recording media with reduced-noise soft magnetic underlayer,” US patent, 60/168,147, filed Nov 28, 2000, S/N 6,531,202, issued to Seagate Technology on Mar 11, 2003
  25. S. Khizroev, B. W. Crue, D. Litvinov, “Method for forming a perpendicular recording read/write head,” US patent, 60/174,519, filed Sep 21, 2000, S/N 6,513,228, issued to Seagate Technology on Feb 4, 2003
  26. P.C. Arnett, D.C. Cheng, S. Khizroev, D. A. Thompson, “Track width control of readback elements via ion implantation in a bonding region of tip portion to selectively deactivate magnetic sensitivity thereof’s,” US patent, S/N 6,483,672, issued to IBM Almaden Research Center on November 19th, 2002

 

Pending Patents:

  1. A. Krichevsky,  S. Khizroev,  A. Lavrenov, I. Dumer, “Magnetic recording medium with a separate mapping/medata/servo underlayer,” UC Case No. 2008-271-1, filed Oct 2, 2007
  2. S. Khizroev, E. Stefanescu, R. Chomko, R. Haddon, “Carbon nanotube based patterned magnetic media,” UC Case No. 2008-138-1, filed Aug 23, 2007
  3. S. Khizroev, R. Ikkawi, N. Amos, R. Chomko, “Protein-based recording system for areal densities above 1 terabit/in2,” UC Case No. 2007-781-1, filed June 12, 2007
  4. S. Khizroev, “Three-dimensional magnetic memory and/or recording device,” US patent application 20060028766, filed February 9, 2006; 11/197,377, filed Aug 4, 2005, with provisional patent, 60/598,645, filed Aug 4, 2004, with FIU
  5. D. Litvinov, R. W. Gustafson, and S. Khizroev, “Read element for magnetic storage media having magnetic coupling between itself and its shields,” US patent, 60/208,252, filed May 23, 2001, with Seagate
  6. D. Litvinov, W. Crue, M.-L. Wu, S. Khizroev, “Magnetic recording heads including boron nitride insulating material,” US patent, 60/191,525,  filed Mar 23, 2001, with Seagate
  7. S. Batra, S. Khizroev, D. Litvinov, “Longitudinal recording head with reduced side fringing,” US patent, 60/180,295, filed Feb 5, 2001, with Seagate
  8. W. Crue, E. C. Johns, S. Khizroev, D. Litvinov, U. Tran, “Write pole for a magnetic recording head having layered low magnetic moment and high magnetic moment material,” US patent, 60/180,292, filed Feb 2, 2001, with Seagate
  9. S. Khizroev, and D. Litvinov, “Perpendicular magnetic recording system including recording media with a soft magnetic underlayer having a saturation moment higher than the moment of the recording head,” US patent, 60/175,863, filed Jan 12, 2001, with Seagate
  10. Y. Ikeda, S. Khizroev, K. Rubin, D. A. Thompson, “Write head with modified field gradient and increased current margin for perpendicular magnetic recording,” US patent, filed 1999, with IBM
  11. S. Khizroev, D. A. Thompson, “Vortex domain configuration in microscopical cylinders made of magnetically soft materials,” US patent, filed 1999, with IBM

Provisional Patents:
over 115 (with Seagate, IBM, CMU, FIU)