Patents by Inventor Alexandra McClelland

Alexandra McClelland 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).

  • Patent number: 11681227
    Abstract: The present disclosure relates to novel negative-type photoresist composition and methods of their use. The disclosure further relates to multiple trigger photoresist processes which allow for the improvement in contrast, resolution, and/or line edges roughness in some systems without giving up sensitivity. The photoresist compositions and the methods of the current disclosure are ideal for fine patent processing using, for example, ultraviolet radiation, extreme ultraviolet radiation, beyond extreme ultraviolet radiation, X-rays and changed particle. The disclosure further relates to sensitivity enhancing materials useful in the disclosed compositions and methods.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: June 20, 2023
    Inventors: Alex P. G. Robinson, Carmen Popescu, John Roth, Andreas Frommhold, Edward Jackson, Alexandra McClelland, Tom Lada, Greg O'Callahan
  • Patent number: 11474430
    Abstract: The present disclosure relates to novel multiple trigger monomer containing negative working photoresist compositions and processes. The processes involve removing acid-labile protecting groups from crosslinking functionalities in a first step and crosslinking the crosslinking functionality with an acid sensitive crosslinker in a second step. The incorporation of a multiple trigger pathway in the resist catalytic chain increases the chemical gradient in areas receiving a low dose of irradiation, effectively acting as a built in dose depend quencher-analog and thus enhancing chemical gradient and thus resolution, resolution blur and exposure latitude. The photoresist compositions utilize novel monomers and mixtures of novel monomers. The methods are ideal for fine pattern processing using, for example, ultraviolet radiation, beyond extreme ultraviolet radiation, extreme ultraviolet radiation, X-rays and charged particle rays.
    Type: Grant
    Filed: August 26, 2017
    Date of Patent: October 18, 2022
    Assignee: IRRESISTIBLE MATERIALS LTD
    Inventors: Alex Philip Graham Robinson, Alexandra McClelland, Andreas Frommhold, Dongxu Yang, John Roth, David Ure
  • Publication number: 20200272050
    Abstract: The present disclosure relates to novel negative-type photoresist composition and methods of their use. The disclosure further relates to multiple trigger photoresist processes which allow for the improvement in contrast, resolution, and/or line edges roughness in some systems without giving up sensitivity. The photoresist compositions and the methods of the current disclosure are ideal for fine patent processing using, for example, ultraviolet radiation, extreme ultraviolet radiation, beyond extreme ultraviolet radiation, X-rays and changed particle. The disclosure further relates to sensitivity enhancing materials useful in the disclosed compositions and methods.
    Type: Application
    Filed: February 25, 2019
    Publication date: August 27, 2020
    Applicant: IRRESISTIBLE MATERIALS, LTD
    Inventors: Alex P. G. Robinson, Carmen Popescu, John Roth, Andreas Frommhold, Edward Jackson, Alexandra McClelland, Tom Lada, Greg O'Callahan
  • Publication number: 20190137876
    Abstract: The present disclosure relates to novel multiple trigger monomer containing negative working photoresist compositions and processes. The processes involve removing acid-labile protecting groups from crosslinking functionalities in a first step and crosslinking the crosslinking functionality with an acid sensitive crosslinker in a second step. The incorporation of a multiple trigger pathway in the resist catalytic chain increases the chemical gradient in areas receiving a low dose of irradiation, effectively acting as a built in dose depend quencher-analog and thus enhancing chemical gradient and thus resolution, resolution blur and exposure latitude. The photoresist compositions utilize novel monomers and mixtures of novel monomers. The methods are ideal for fine pattern processing using, for example, ultraviolet radiation, beyond extreme ultraviolet radiation, extreme ultraviolet radiation, X-rays and charged particle rays.
    Type: Application
    Filed: August 26, 2017
    Publication date: May 9, 2019
    Inventors: Alex Philip Graham Robinson, Alexandra McClelland, Andreas Frommhold, Dongxu Yang, John Roth, David Ure
  • Patent number: 10095112
    Abstract: The present disclosure relates to novel multiple trigger negative working photoresist compositions and processes. The processes involve removing acid-labile protecting groups from crosslinking functionalities in a first step and crosslinking the crosslinking functionality with an acid sensitive crosslinker in a second step. The incorporation of a multiple trigger pathway in the resist catalytic chain increases the chemical gradient in areas receiving a low dose of irradiation, effectively acting as a built in dose depend quencher-analog and thus enhancing chemical gradient and thus resolution, resolution blur and exposure latitude. The photoresist compositions and the methods are ideal for fine pattern processing using, for example, ultraviolet radiation, beyond extreme ultraviolet radiation, extreme ultraviolet radiation, X-rays and charged particle rays.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: October 9, 2018
    Assignee: IRRESISTIBLE MATERIALS LTD
    Inventors: Alex Phillip Graham Robinson, Alexandra McClelland, Andreas Frommhold, Dongxu Yang, John Roth
  • Publication number: 20180246408
    Abstract: The present disclosure relates to novel multiple trigger negative working photoresist compositions and processes. The processes involve removing acid-labile protecting groups from crosslinking functionalities in a first step and crosslinking the crosslinking functionality with an acid sensitive crosslinker in a second step. The incorporation of a multiple trigger pathway in the resist catalytic chain increases the chemical gradient in areas receiving a low dose of irradiation, effectively acting as a built in dose depend quencher-analog and thus enhancing chemical gradient and thus resolution, resolution blur and exposure latitude. The photoresist compositions and the methods are ideal for fine pattern processing using, for example, ultraviolet radiation, beyond extreme ultraviolet radiation, extreme ultraviolet radiation, X-rays and charged particle rays.
    Type: Application
    Filed: February 24, 2017
    Publication date: August 30, 2018
    Applicant: Irresistible Materials, LTD
    Inventors: Alex Phillip Graham Robinson, Alexandra McClelland, Andreas Frommhold, Dongxu Yang, John Roth
  • Patent number: 9323149
    Abstract: The present disclosure relates to novel methanofullerene derivatives, negative-type photoresist compositions prepared therefrom and methods of using them. The derivatives, their photoresist compositions and the methods are ideal for fine pattern processing using, for example, ultraviolet radiation, beyond extreme ultraviolet radiation, extreme ultraviolet radiation, X-rays and charged particle rays. Negative photosensitive compositions are also disclosed.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: April 26, 2016
    Assignee: IRRESISTIBLE MATERIALS LTD
    Inventors: Alex Philip Graham Robinson, Jon Andrew Preece, Richard Edward Palmer, Andreas Frommhold, Dongxu Yang, Alexandra McClelland, Drew Athans, Xiang Xue
  • Patent number: 9256126
    Abstract: The present disclosure relates to novel methanofullerene derivatives, negative-type photoresist compositions prepared therefrom and methods of using them. The derivatives, their photoresist compositions and the methods are ideal for fine pattern processing using, for example, ultraviolet radiation, beyond extreme ultraviolet radiation, extreme ultraviolet radiation, X-rays and charged particle rays.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: February 9, 2016
    Assignee: IRRESISTIBLE MATERIALS LTD
    Inventors: Alex Philip Graham Robinson, Jon Andrew Preece, Richard Edward Palmer, Andreas Frommhold, Dongxu Yang, Alexandra McClelland, Drew Athens, Xiang Xu
  • Publication number: 20140255849
    Abstract: The present disclosure relates to novel methanofullerene derivatives, negative-type photoresist compositions prepared therefrom and methods of using them. The derivatives, their photoresist compositions and the methods are ideal for fine pattern processing using, for example, ultraviolet radiation, beyond extreme ultraviolet radiation, extreme ultraviolet radiation, X-rays and charged particle rays. Negative photosensitive compositions are also disclosed.
    Type: Application
    Filed: February 24, 2014
    Publication date: September 11, 2014
    Inventors: Alex Philip Graham Robinson, Jon Andrew Preece, Richard Edward Palmer, Andreas Frommhold, Dongxu Yang, Alexandra McClelland, Drew Athans, Xiang Xue
  • Publication number: 20140134843
    Abstract: The present disclosure relates to novel methanofullerene derivatives, negative-type photoresist compositions prepared therefrom and methods of using them. The derivatives, their photoresist compositions and the methods are ideal for fine pattern processing using, for example, ultraviolet radiation, beyond extreme ultraviolet radiation, extreme ultraviolet radiation, X-rays and charged particle rays.
    Type: Application
    Filed: October 31, 2013
    Publication date: May 15, 2014
    Inventors: Alex Philip Graham Robinson, Jon Andrew Preece, Richard Edward Palmer, Andreas Frommhold, Dongxu Yang, Alexandra McClelland, Drew Athens, Xiang Xu