Patents by Inventor Laxmisha M. Sridhar

Laxmisha M. Sridhar 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: 20240084178
    Abstract: Two part cyanoacrylate/free radical curable adhesive systems are provided.
    Type: Application
    Filed: October 30, 2023
    Publication date: March 14, 2024
    Inventors: Laxmisha M. Sridhar, Chetan Hire, Shabbir T. Attarwala, Joseph Schulz, Roger Grismala
  • Publication number: 20240010890
    Abstract: Provided are flux-compatible epoxy-phenol adhesive compositions useful as a low gap underfill and novel phenols useful therein. The flux-compatible epoxy-phenol adhesive compositions include an epoxy component including an epoxy compound having a cycloaliphatic, alicyclic or mixed cycloaliphatic-aromatic backbone, a multifunctional phenolic component, and a catalyst. The flux-compatible compositions are useful as an underfilling sealant which (1) rapidly fills the underfill space in a semiconductor device, such as a flip chip assembly, (2) enables the device to be securely connected to a circuit board by short-time heat curing and with good productivity, and (3) demonstrates excellent solder reflow resistance.
    Type: Application
    Filed: September 25, 2023
    Publication date: January 11, 2024
    Inventors: Laxmisha M. Sridhar, Zhan Hang Yang
  • Publication number: 20230242738
    Abstract: The disclosure relates to oxamate esters and formulations made therefrom, and to methods of making both the oxamate esters and the formulations.
    Type: Application
    Filed: November 14, 2022
    Publication date: August 3, 2023
    Inventors: Laxmisha M. Sridhar, Kevin J. Welch
  • Publication number: 20230114308
    Abstract: Provided are flux-compatible epoxy-anhydride compositions useful as low-gap underfill adhesives. The flux-compatible epoxy-anhydride compositions include an epoxy component and an anhydride composition comprising a monofunctional anhydride and at least one difunctional anhydride and optionally at least one polyfunctional anhydride. The flux-compatible compositions are useful as an underfilling sealant which (1) rapidly fills the underfill space in a semiconductor device, such as a flip chip assembly, (2) enables the device to be securely connected to a circuit board by short-time heat curing and with good productivity, and (3) demonstrates excellent solder reflow resistance.
    Type: Application
    Filed: December 1, 2022
    Publication date: April 13, 2023
    Inventors: Sandeep Kapadia, Laxmisha M. Sridhar, Zhan Hang Yang, Pukun Zhu, Sarah Liao
  • Patent number: 11542268
    Abstract: Cationically curable compositions with latent reducing agents that demonstrate low cure temperature and improved work life are provided.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: January 3, 2023
    Assignee: Henkel AG & Co. KGaA
    Inventors: Laxmisha M. Sridhar, Timothy M. Champagne
  • Publication number: 20210253859
    Abstract: The present disclosure provides dual curable compositions having both radiation curing and shadow curing mechanisms. The compositions comprise silicon-organic hybrid polymers having rapid shadow curing by a 2 part isocyanate-polyol reaction and/or a 2 part cyclic carbonate-amine reaction. The compositions can be used as adhesives or coatings. The use of the compositions according to the disclosure is particularly preferred for use in electro-optical components especially for automobile display adhesives applications.
    Type: Application
    Filed: April 30, 2021
    Publication date: August 19, 2021
    Inventors: Laxmisha M. Sridhar, Kevin J. Welch
  • Publication number: 20210107915
    Abstract: Cationically curable compositions with latent reducing agents that demonstrate low cure temperature and improved work life are provided.
    Type: Application
    Filed: December 22, 2020
    Publication date: April 15, 2021
    Inventors: Laxmisha M. SRIDHAR, Timothy M. CHAMPAGNE
  • Patent number: 10472548
    Abstract: Thermosetting resin compositions are provided that are useful for mounting onto a circuit board semiconductor devices, such as chip size or chip scale packages (“CSPs”), ball grid arrays (“BGAs”), land grid arrays (“LGAs”) and the like (collectively, “subcomponents”), or semiconductor chips. Reaction products of the compositions are controllably reworkable when subjected to appropriate conditions.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: November 12, 2019
    Assignee: Henkel IP & Holding GmbH
    Inventors: Timothy M. Champagne, Laxmisha M. Sridhar, Jonathan B. Israel, Philip T. Klemarczyk, XianMan Zhang, Benny E. Jordan
  • Publication number: 20180155588
    Abstract: Thermosetting resin compositions are provided that are useful for mounting onto a circuit board semiconductor devices, such as chip size or chip scale packages (“CSPs”), ball grid arrays (“BGAs”), land grid arrays (“LGAs”) and the like (collectively, “subcomponents”), or semiconductor chips. Reaction products of the compositions are controllably reworkable when subjected to appropriate conditions.
    Type: Application
    Filed: October 27, 2017
    Publication date: June 7, 2018
    Inventors: Timothy M. Champagne, Laxmisha M. Sridhar, Jonathan B. Israel, Philip T. Klemarczyk, XianMan Zhang, Benny E. Jordan
  • Publication number: 20180134839
    Abstract: The present invention relates to curable novel resins and prepolymers, methods of manufacture and compositions made therefrom. Particularly useful applications include one drop fill sealant used in liquid crystal assembly. In particular, the inventive resins and prepolymers and compositions are useful in the assembly of LCD panels.
    Type: Application
    Filed: January 14, 2018
    Publication date: May 17, 2018
    Inventors: Laxmisha M. Sridhar, Baoshan Gao, Jing Zhou, Qin Li, Wenhua Zhang, Shengian Kong, John G. Woods, Anthony F. Jacobine
  • Publication number: 20180134657
    Abstract: The present invention relates to curable novel bismaleimide resins and prepolymers, methods of manufacture. Particularly useful applications include one drop fill sealant used in liquid crystal assembly. In particular, the inventive polymers and compositions are useful in the assembly of LCD panels.
    Type: Application
    Filed: January 14, 2018
    Publication date: May 17, 2018
    Inventors: Laxmisha M. Sridhar, John G. Woods
  • Publication number: 20180136499
    Abstract: The present invention relates to bismaleimide resins and curable compositions for One Drop Fill sealant applications using such resins, particularly in liquid crystal display assembly applications. The inventive compositions can be cured by a UV, thermal or a combination of UV and thermal.
    Type: Application
    Filed: January 14, 2018
    Publication date: May 17, 2018
    Inventors: Laxmisha M. Sridhar, Baoshan Gao, Jing Zhou
  • Patent number: 9938437
    Abstract: Thermosetting resin compositions are provided that are useful for mounting onto a circuit board semiconductor devices, such as chip size or chip scale packages (“CSPs”), ball grid arrays (“BGAs”), land grid arrays (“LGAs”) and the like (collectively, “subcomponents”), or semiconductor chips. Reaction products of the compositions are controllably reworkable when subjected to appropriate conditions.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: April 10, 2018
    Assignee: Henkel IP & Holding GmbH
    Inventors: Timothy M. Champagne, Laxmisha M. Sridhar, Jonathan B. Israel, Philip T. Klemarczyk, XianMan Zhang, Benny E. Jordan
  • Publication number: 20160002510
    Abstract: Thermosetting resin compositions are provided that are useful for mounting onto a circuit board semiconductor devices, such as chip size or chip scale packages (“CSPs”), ball grid arrays (“BGAs”), land grid arrays (“LGAs”) and the like (collectively, “subcomponents”), or semiconductor chips. Reaction products of the compositions are controllably reworkable when subjected to appropriate conditions.
    Type: Application
    Filed: September 18, 2015
    Publication date: January 7, 2016
    Inventors: Timothy M. Champagne, Laxmisha M. Sridhar, Jonathan B. Israel, Philip T. Klemarczyk, XianMan Zhang, Benny E. Jordan
  • Patent number: 8734939
    Abstract: The invention relates to a thermally reversible hot melt adhesive that is isocyanate-free, moisture independent, crosslinkable and thermally reversible. The thermally reversible hot melt adhesive may be repeatedly heated and cooled without negatively affecting the performance of the adhesive. The thermally reversible composition may also be used as a primer layer. The thermally reversible hot melt adhesive and primer are particularly well suited for end use applications such as packaging, graphic arts, construction, footwear, textiles, general assembly, automotive and consumer goods.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: May 27, 2014
    Assignee: Henkel US IP LLC
    Inventors: Donald Herr, Laxmisha M. Sridhar, Andrew Slark
  • Patent number: 8580891
    Abstract: Silicone acrylic hybrid compositions prepared by reacting together silicone polymers, silicone resins, and silyl containing acrylic polymers are useful in adhesive compositions that find use in skin contact applications.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: November 12, 2013
    Assignee: Henkel US IP LLC
    Inventors: Yuxia Liu, Charles Willard Paul, Jiangbo Ouyang, Paul B. Foreman, Laxmisha M. Sridhar, Smita Shah
  • Patent number: 8324319
    Abstract: A cationically polymerizable composition comprising (i) a cationically polymerizable resin, (ii) an onium salt, (iii) an azo or peroxide initiator, exhibits a lower cure temperature upon the addition of (iv) a catalytic or substoichiometric amount of an electron-rich vinyl resin to the reaction.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: December 4, 2012
    Inventors: Laxmisha M. Sridhar, Osama M. Musa
  • Publication number: 20120095159
    Abstract: Silicone acrylic hybrid compositions prepared by reacting together silicone polymers, silicone resins, and silyl containing acrylic polymers are useful in adhesive compositions that find use in skin contact applications.
    Type: Application
    Filed: October 24, 2011
    Publication date: April 19, 2012
    Inventors: Yuxia Liu, Charles Willard Paul, Jiangbo Ouyang, Paul B. Foreman, Laxmisha M. Sridhar, Smita Shah
  • Publication number: 20120082840
    Abstract: The invention relates to a thermally reversible hot melt adhesive that is isocyanate-free, moisture independent, crosslinkable and thermally reversible. The thermally reversible hot melt adhesive may be repeatedly heated and cooled without negatively affecting the performance of the adhesive. The thermally reversible composition may also be used as a primer layer. The thermally reversible hot melt adhesive and primer are particularly well suited for end use applications such as packaging, graphic arts, construction, footwear, textiles, general assembly, automotive and consumer goods.
    Type: Application
    Filed: December 12, 2011
    Publication date: April 5, 2012
    Applicant: Henkel Corporation
    Inventors: Donald Herr, Laxmisha M. Sridhar, Andrew Slark
  • Publication number: 20100222512
    Abstract: A cationically polymerizable composition comprising (i) a cationically polymerizable resin, (ii) an onium salt, (iii) an azo or peroxide initiator, exhibits a lower cure temperature upon the addition of (iv) a catalytic or substoichiometric amount of an electron-rich vinyl resin to the reaction.
    Type: Application
    Filed: May 11, 2010
    Publication date: September 2, 2010
    Inventors: Laxmisha M. Sridhar, Osama M. Musa