Patents by Inventor Donald Frederick Ezekiel

Donald Frederick Ezekiel 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).

  • Method of cast moulding a translating multifocal contact lens
    Patent number: 9943994
    Abstract: There is provided a contact lens (60) which is produced by cast molding. The cast molding is achieved by the use of an anterior face mold insert (30) which has a cap (24) with a domed surface (26) and a body (10). The domed surface has provision for a distance vision segment (31) and a reading segment (32) separated by a demarcation (33). Further, the cap (24) has a cutaway portion (20) for producing a lower ledge and the body (10) has a projection (18) for producing a lower truncation in the resultant lens. Means is also described for forming a posterior face of the contact lens (60).
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: April 17, 2018
    Assignee: EZEKIEL NOMINEES PTY LTD
    Inventor: Donald Frederick Ezekiel
  • METHOD OF CAST MOULDING A TRANSLATING MULTIFOCAL CONTACT LENS
    Publication number: 20170266850
    Abstract: There is provided a contact lens (60) which is produced by cast moulding. The cast moulding is achieved by the use of an anterior face mould insert (30) which has a cap (24) with a domed surface (26) and a body (10). The domed surface has provision for a distance vision segment (31) and a reading segment (32) separated by a demarcation (33). Further, the cap (24) has a cutaway portion (20) for producing a lower ledge and the body (10) has a projection (18) for producing a lower truncation in the resultant lens. Means is also described for forming a posterior face of the contact lens (60).
    Type: Application
    Filed: June 6, 2017
    Publication date: September 21, 2017
    Inventor: Donald Frederick Ezekiel
  • Method of cast moulding a translating multifocal contact lens
    Patent number: 9676125
    Abstract: There is provided a contact lens (60) which is produced by cast molding. The cast molding is achieved by the use of an anterior face mold insert (30) which has a cap (24) with a domed surface (26) and a body (10). The domed surface has provision for a distance vision segment (31) and a reading segment (32) separated by a demarcation (33). Further, the cap (24) has a cutaway portion (20) for producing a lower ledge and the body (10) has a projection (18) for producing a lower truncation in the resultant lens. Means is also described for forming a posterior face of the contact lens (60).
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: June 13, 2017
    Assignee: EZEKIEL NOMINEES PTY LTD
    Inventor: Donald Frederick Ezekiel
  • METHOD OF CAST MOULDING A TRANSLATING MULTIFOCAL CONTACT LENS
    Publication number: 20150084218
    Abstract: There is provided a contact lens (60) which is produced by cast moulding. The cast moulding is achieved by the use of an anterior face mould insert (30) which has a cap (24) with a domed surface (26) and a body (10). The domed surface has provision for a distance vision segment (31) and a reading segment (32) separated by a demarcation (33). Further, the cap (24) has a cutaway portion (20) for producing a lower ledge and the body (10) has a projection (18) for producing a lower truncation in the resultant lens. Means is also described for forming a posterior face of the contact lens (60).
    Type: Application
    Filed: August 10, 2012
    Publication date: March 26, 2015
    Applicant: EZEKIEL NOMINEES PTY LTD
    Inventor: Donald Frederick Ezekiel
  • Soft multifocal contact lens
    Patent number: 6746119
    Abstract: A multifocal contact lens (10, 50) made of flexible material is able to translocate on an eye by virtue of a lower end (22) of the contact lens (10, 50) being truncated so as to provide a relatively wide surface. The lower end (22) engages with the lower eyelid of a wearer. The lower end (22) may be provided with a forwardly projecting ledge (52).
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: June 8, 2004
    Assignee: Iolco PTY LTD
    Inventor: Donald Frederick Ezekiel
  • Soft multifocal contact lens
    Publication number: 20030095231
    Abstract: A multifocal contact lens (10, 50) made of flexible material is able to translocate on an eye by virtue of a lower end (22) of the contact lens (10, 50) being truncated so as to provide a relatively wide surface. The lower end (22) engages with the lower eyelid of a wearer. The lower end (22) may be provided with a forwardly projecting ledge (52).
    Type: Application
    Filed: June 13, 2002
    Publication date: May 22, 2003
    Inventor: Donald Frederick Ezekiel