Patents by Inventor Saif A. Khan

Saif A. Khan 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: 20220402895
    Abstract: The present invention relates, in general terms, to a method of synthesising compounds and a system for synthesising compounds. The method and system can be automated. The method of synthesising a compound includes providing a solid support in fluid communication with a computer-controlled flow system, covalently bonding a first precursor to the solid support, performing at least one reaction, and cleaving the compound from the solid support.
    Type: Application
    Filed: October 22, 2020
    Publication date: December 22, 2022
    Inventors: Jie WU, Saif A. KHAN, Chenguang LIU, Wenbin WU, Weihao CHEN, Mu WANG, Jiaxun XIE
  • Publication number: 20190068768
    Abstract: A privacy protection system enables a user to prevent unwanted and access to data collected by the camera or microphone of a cellular device. The camera is obstructed by a member in such a way as to allow light to reach the camera in an unintelligible state. The microphone is blocked by a knob to prevent sound from reaching the microphone. The member and knob are positioned by way of a case.
    Type: Application
    Filed: August 31, 2018
    Publication date: February 28, 2019
    Inventors: Rohan Garg, Shahin Garrossian, Saif Khan
  • Patent number: 9902686
    Abstract: A one-to-many parallelized millireactor system capable of high throughput production in millireactors. Also disclosed is a method for carrying out multi-phase reactions.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: February 27, 2018
    Assignee: National University of Singapore
    Inventors: Saif A. Khan, Swee Kun Yap
  • Patent number: 9850184
    Abstract: Disclosed is a reactor system that contains multiple millireactors, each including a millitube, a first feed line, a second feed line, and a third feed line. Each of the first and second feed lines has a hydraulic damper disposed therein. Also disclosed is a process for conducting in a millitube a triphasic flow reaction that requires a liquid reactant, a gas reactant, and a catalyst.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: December 26, 2017
    Assignee: National University of Singapore
    Inventors: Saif A. Khan, Ning Yan, Swee Kun Yap, Yuan Yuan
  • Publication number: 20170304207
    Abstract: An emulsion-based method for the manufacture of a crystalized spherical agglomerate and/or a pharmaceutical product is provided; and crystalized spherical agglomerates and/or pharmaceutical products manufactured thereby.
    Type: Application
    Filed: July 12, 2017
    Publication date: October 26, 2017
    Inventors: Saif A. KHAN, Reno Antony Louis LEON, Abu Zayed Md. BADRUDDOZA, Wai Yew WAN, T. Alan HATTON
  • Publication number: 20170121271
    Abstract: A one-to-many parallelized millireactor system capable of high throughput production in millireactors. Also disclosed is a method for carrying out multi-phase reactions.
    Type: Application
    Filed: November 3, 2016
    Publication date: May 4, 2017
    Inventors: Saif A. Khan, Swee Kun Yap
  • Publication number: 20170101358
    Abstract: Disclosed is a reactor system that contains multiple millireactors, each including a millitube, a first feed line, a second feed line, and a third feed line. Each of the first and second feed lines has a hydraulic damper disposed therein. Also disclosed is a process for conducting in a millitube a triphasic flow reaction that requires a liquid reactant, a gas reactant, and a catalyst.
    Type: Application
    Filed: June 19, 2015
    Publication date: April 13, 2017
    Inventors: Saif A. Khan, Ning Yan, Swee Kun Yap, Yuan Yuan
  • Publication number: 20160263034
    Abstract: The invention concerns an emulsion-based method for the manufacture of a crystalized spherical agglomerate and/or a pharmaceutical product; and crystalized spherical agglomerate and/or a pharmaceutical product manufactured thereby.
    Type: Application
    Filed: October 15, 2014
    Publication date: September 15, 2016
    Inventors: Saif A. KHAN, Reno Antony Louis LEON, Abu Zayed Md. BADRUDDOZA, Wai Yew WAN, T. Alan HATTON
  • Patent number: 8964889
    Abstract: A device and method for precoding vectors in a communication system is provided. A transmitter may precode a data vector using information regarding a communication channel prior to transmitting the data vector. The transmitter may precode the data vector in a manner that reduces an energy value of a resulting transmit data vector so as to minimize interference in a received signal at a receiver. The transmitter may perturb entries of the data vector one-by-one in an iterative fashion until a minimum in an energy value of the transmit data vector is obtained.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: February 24, 2015
    Assignee: Indian Institute of Science
    Inventors: Ananthanarayanan Chockalingam, Balaji Sundar Rajan, Saif Khan Mohammed
  • Patent number: 8802441
    Abstract: There is provided a method for synthesizing colloidal nanoparticles comprising the step of creating a reactive three-phase foam containing reactants therein for synthesizing the colloidal nanoparticles.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: August 12, 2014
    Assignee: National University of Singapore
    Inventors: Saif A. Khan, Suhanya Duraiswamy
  • Patent number: 8804858
    Abstract: Techniques for enabling an estimate of a transmittal signal vector, given a received signal vector and a channel matrix to be computed, are provided. An initial solution signal vector for the estimate is calculated, and based on the initial estimate, a pool of possible solutions is generated. Methods described herein may be iterative in nature, and may cycle through possible estimates of the transmitted signal vector so as to continually improve the estimates and the pool of possible estimates. The methods may terminate once stopping criteria are reached. In some example methods, solutions may be marked at taboo and a taboo period can be established that indicates a number of subsequent iterations for which the current solution signal vector cannot be considered.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: August 12, 2014
    Assignee: Indian Institute of Science
    Inventors: Ananthanarayanan Chockalingam, Balaji Sundar Rajan, Srinidhi Nagaraja, Saif Khan Mohammed
  • Patent number: 8605808
    Abstract: Disclosed is a method and system to detect data transmitted by multiple transmit antennas. The method comprises selecting a starting data block that is either a random data block or an output data block from known detectors. Also, the method comprises changing each symbol of the starting data block one symbol at a time to identify a data block which has minimum euclidean distance from the starting data block as detected data block. Next, changing two symbols of the detected data block at a time to identify a data block which has minimum euclidean distance from the starting data block as second data block and assigning the second data block as the starting data block. Repeating the above steps, if the minimum euclidean distance of second data block is better than that of the detected data block, and determining the detected data block as the data transmitted.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: December 10, 2013
    Assignee: Indian Institute of Science
    Inventors: Ananthanarayanan Chockalingam, Balaji Sundar Rajan, Saif Khan Mohammed
  • Publication number: 20130315356
    Abstract: Techniques for enabling an estimate of a transmittal signal vector, given a received signal vector and a channel matrix to be computed, are provided. An initial solution signal vector for the estimate is calculated, and based on the initial estimate, a pool of possible solutions is generated. Methods described herein may be iterative in nature, and may cycle through possible estimates of the transmitted signal vector so as to continually improve the estimates and the pool of possible estimates. The methods may terminate once stopping criteria are reached. In some example methods, solutions may be marked at taboo and a taboo period can be established that indicates a number of subsequent iterations for which the current solution signal vector cannot be considered.
    Type: Application
    Filed: July 2, 2013
    Publication date: November 28, 2013
    Applicant: Indian Institute of Science
    Inventors: Ananthanarayanan CHOCKALINGAM, Balaji Sundar RAJAN, Srinidhi NAGARAJA, Saif Khan MOHAMMED
  • Patent number: 8503544
    Abstract: Techniques for enabling an estimate of a transmitted signal vector, given a received signal vector and a channel matrix to be computed, are provided. An initial solution signal vector for the estimate is calculated, and based on the initial estimate, a pool of possible solutions is generated. Methods described herein may be iterative in nature, and may cycle through possible estimates of the transmitted signal vector so as to continually improve the estimates and the pool of possible estimates. The methods may terminate once stopping criteria are reached. In some example methods, solutions may be marked at taboo and a taboo period can be established that indicates a number of subsequent iterations for which the current solution signal vector cannot be considered.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: August 6, 2013
    Assignee: Indian Institute of Science
    Inventors: Ananthanarayanan Chockalingam, Balaji Sundar Rajan, Srinidhi Nagaraja, Saif Khan Mohammed
  • Publication number: 20130171413
    Abstract: Methods for altering the wetting property of the surface of a substrate are disclosed. The methods can include the step of providing an array of nanostructures on the substrate, each nanostructure having a proximal end adjacent to the substrate and a distal end opposite to the proximal end. The methods can also include the step of moving the distal ends of at least one subset of the array of nanostructures towards each other to form at least one nanostructure cluster. The nanostructures of each cluster have distal ends that are spaced closer to each other relative to the respective proximal ends of the adjacent nanostructures, the nanostructure cluster altering the wetting property of the substrate.
    Type: Application
    Filed: September 13, 2011
    Publication date: July 4, 2013
    Inventors: Saif A. Khan, Mohammed Khalid Bin Dawood, Raj Rajagopalan, Wee Kiong Choi, Han Zheng
  • Patent number: 8320432
    Abstract: A device and method for precoding vectors in a communication system is provided. A transmitter may precode a data vector using information regarding a communication channel prior to transmitting the data vector. The transmitter may precode the data vector in a manner that reduces an energy value of a resulting transmit data vector so as to minimize interference in a received signal at a receiver. The transmitter may perturb entries of the data vector one-by-one in an iterative fashion until a minimum in an energy value of the transmit data vector is obtained.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: November 27, 2012
    Assignee: Indian Institute of Science at Bangalore
    Inventors: Ananthanarayanan Chockalingam, Balaji Sundar Rajan, Saif Khan Mohammed
  • Patent number: 8116411
    Abstract: A method to detect data transmitted from multiple antennas, said method comprising steps of: selecting a starting data block and calling it as previous data block; defining a set of indices of bits to be checked for possible flip in the previous data block as a check candidate set; applying update rule to obtain updated data block using the previous data block and the check candidate set, wherein the update is made in such a manner that change in likelihood is positive; checking if the updated data block and several consecutive previous data blocks are the same; if yes, declare the updated data block as the detected data block; if no, make updated data block as previous data block and repeat updation of data block.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: February 14, 2012
    Assignee: Indian Institute of Science
    Inventors: Ananthanarayanan Chockalingam, Balaji Sundar Rajan, Kalepalli Vishnu Vardhan, Saif Khan Mohammed
  • Publication number: 20110268203
    Abstract: Techniques for enabling an estimate of a transmitted signal vector, given a received signal vector and a channel matrix to be computed, are provided. An initial solution signal vector for the estimate is calculated, and based on the initial estimate, a pool of possible solutions is generated. Methods described herein may be iterative in nature, and may cycle through possible estimates of the transmitted signal vector so as to continually improve the estimates and the pool of possible estimates. The methods may terminate once stopping criteria are reached. In some example methods, solutions may be marked at taboo and a taboo period can be established that indicates a number of subsequent iterations for which the current solution signal vector cannot be considered.
    Type: Application
    Filed: April 30, 2010
    Publication date: November 3, 2011
    Applicant: INDIAN INSTITUTE OF SCIENCE
    Inventors: Ananthanarayanan Chockalingam, Balaji Sundar Rajan, Srinidhi N., Saif Khan Mohammed
  • Publication number: 20110215277
    Abstract: There is provided a method for synthesizing colloidal nanoparticles comprising the step of creating a reactive three-phase foam containing reactants therein for synthesizing the colloidal nanoparticles.
    Type: Application
    Filed: March 4, 2011
    Publication date: September 8, 2011
    Applicant: NATIONAL UNIVERSITY OF SINGAPORE
    Inventors: Saif A. Khan, Suhanya Duraiswamy
  • Publication number: 20110200986
    Abstract: There is provided a method, an in vitro method and a detection system for detecting the presence of at least one biological molecule in at least one sample. The method can include, for example, providing a sample and/or a binding agent to a contact portion of a surface by way of at least one microfluidic channel; disposing a liquid crystal at the contact portion; determining whether the orientation of the liquid crystal changes after the sample contacts the binding agent, indicating the presence of the biological molecule; and determining length of bright region of the liquid crystal and/or change in interference color of said liquid crystal, and consequently indicating the quantity of said biological molecule. Also disclosed are methods of detecting biological molecules using at least one 4?-pentyl-biphenyl-4-R, where R may be at least one functional group selected from carboxylic acid, amine, aldehyde, and oligopeptide.
    Type: Application
    Filed: October 6, 2009
    Publication date: August 18, 2011
    Applicant: NATIONAL UNIVERSITY OF SINGAPORE
    Inventors: Kun-Lin Yang, Changying Xue, Saif A. Khan, Xinyan Bi