Patents by Inventor Ehsan FALLAHMOHAMMADI
Ehsan FALLAHMOHAMMADI 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).
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Publication number: 20240012216Abstract: An optical cable includes a plurality of buffer tubes and an outer jacket surrounding the plurality of buffer tubes. Each of the plurality of buffer tubes includes a buffer tube jacket surrounding a plurality of flexible ribbons. The buffer tube jacket includes a first deformable material that has undergone deformation during formation of the optical cable to conform to an irregular axial cross-sectional shape of each respective plurality of flexible ribbons. Each flexible ribbon includes a plurality of optical fibers and a first longitudinal length. For each flexible ribbon, each optical fiber of the plurality of optical fibers is attached to an adjacent optical fiber of the plurality of optical fibers along a bond region comprising a second longitudinal length that is less than the first longitudinal length. The cable has a fiber density between about 5.0 and about 10 fibers/mm2.Type: ApplicationFiled: September 21, 2023Publication date: January 11, 2024Inventors: Ben H. Wells, Ehsan Fallahmohammadi, Brian G. Risch, Clint Nicholaus Anderson, John R. Sach, Jeffrey Scott Barker
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Patent number: 11860429Abstract: An optical-fiber ribbon includes optical fibers (e.g., reduced-diameter optical fibers) arranged in parallel within optical-fiber units, wherein at least one adjacent pair of optical-fiber units is separated by a longitudinal adhesive-free spacing for a portion of the optical-fiber ribbon's length. Typically, each adjacent pair of optical-fiber units is separated by an adhesive-free spacing for a respective portion of the optical-fiber assembly's longitudinal length. In an exemplary embodiment, longitudinal adhesive-free spacings effectively increase the width of an optical-fiber ribbon formed of reduced-diameter optical fibers so that the optical-fiber ribbon achieves a more conventional optical-fiber ribbon width, thereby facilitating mass-fusion splicing using standard splicing equipment.Type: GrantFiled: June 20, 2022Date of Patent: January 2, 2024Assignee: Prysmian S.p.A.Inventors: Ehsan Fallahmohammadi, Clint Nicholaus Anderson, Luca Giorgio De Rai
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Patent number: 11796750Abstract: An optical cable includes a plurality of buffer tubes and an outer jacket surrounding the plurality of buffer tubes. Each of the plurality of buffer tubes includes a buffer tube jacket surrounding a plurality of flexible ribbons. The buffer tube jacket includes a first deformable material that has undergone permanent plastic deformation during formation of the optical cable to conform to an irregular axial cross-sectional shape of each respective plurality of flexible ribbons. Each flexible ribbon includes a plurality of optical fibers and a first longitudinal length. For each flexible ribbon, each optical fiber of the plurality of optical fibers is attached to an adjacent optical fiber of the plurality of optical fibers along a bond region comprising a second longitudinal length that is less than the first longitudinal length.Type: GrantFiled: January 31, 2022Date of Patent: October 24, 2023Assignee: PRYSMIAN S.P.A.Inventors: Ben H. Wells, Ehsan Fallahmohammadi, Brian G. Risch, Clint Nicholaus Anderson, John R. Sach, Jeffrey Scott Barker
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Publication number: 20230266549Abstract: An optical-fiber ribbon having excellent flexibility, strength, and robustness facilitates separation of an optical fiber from the optical-fiber ribbon without damaging the optical fiber's glass core, glass cladding, primary coating, secondary coating, and ink layer, if present.Type: ApplicationFiled: April 26, 2023Publication date: August 24, 2023Inventors: Ehsan Fallahmohammadi, Clint Nicholaus Anderson, Brian G. Risch, Andrea Terry, John R. Sach, Jeffrey Scott Barker, Ryan Truong
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Patent number: 11656417Abstract: An optical-fiber ribbon having excellent flexibility, strength, and robustness facilitates separation of an optical fiber from the optical-fiber ribbon without damaging the optical fiber's glass core, glass cladding, primary coating, secondary coating, and ink layer, if present.Type: GrantFiled: February 3, 2022Date of Patent: May 23, 2023Assignee: Prysmian S.p.A.Inventors: Ehsan Fallahmohammadi, Clint Nicholaus Anderson, Brian G. Risch, Andrea Terry, John R. Sach, Jeffrey Scott Barker, Ryan Truong
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Publication number: 20230013589Abstract: The present invention relates to an optical fiber ribbon, comprising a plurality of adjacent optical fiber units extending in a longitudinal direction and arranged in parallel forming an optical fiber assembly having a width, each of the optical fiber units comprising either a single fiber or a group of at most three optical fibers, preferably two optical fibers, encapsulated with a matrix material; and a plurality of successive elongated rectilinear beads of a bonding material being arranged along a length of said assembly; each of said plurality of beads being configured to form an elongated bond between two adjacent optical fiber units of the plurality of optical fiber units. The present invention moreover relates to a method of producing such an optical fiber ribbon. A fluorescent tracer is present in the beads.Type: ApplicationFiled: September 29, 2022Publication date: January 19, 2023Inventors: Ehsan Fallahmohammadi, Brian G. Risch, John R. Sach, Jeffrey Scott Barker, Clint Anderson
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Patent number: 11500171Abstract: The present invention relates to an optical fiber ribbon, comprising a plurality of adjacent optical fiber units extending in a longitudinal direction and arranged in parallel forming an optical fiber assembly having a width, each of the optical fiber units comprising either a single fiber or a group of at most three optical fibers, preferably two optical fibers, encapsulated with a matrix material; and a plurality of successive elongated rectilinear beads of a bonding material being arranged along a length of said assembly; each of said plurality of beads being configured to form an elongated bond between two adjacent optical fiber units of the plurality of optical fiber units; wherein a first bead forming a first bond connects a first pair of adjacent optical fiber units while the successive bond formed by the successive bead, connects a further pair of adjacent optical fiber units, wherein at least one optical fiber unit of the further pair differs from the optical fiber units of the first pair; wherein atType: GrantFiled: January 15, 2018Date of Patent: November 15, 2022Assignee: Prysmian S.p.A.Inventors: Ehsan Fallahmohammadi, Brian G. Risch, John R. Sach, Jeffrey Scott Barker, Clint Anderson
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Publication number: 20220326461Abstract: An optical-fiber ribbon includes optical fibers (e.g., reduced-diameter optical fibers) arranged in parallel within optical-fiber units, wherein at least one adjacent pair of optical-fiber units is separated by a longitudinal adhesive-free spacing for a portion of the optical-fiber ribbon's length. Typically, each adjacent pair of optical-fiber units is separated by an adhesive-free spacing for a respective portion of the optical-fiber assembly's longitudinal length. In an exemplary embodiment, longitudinal adhesive-free spacings effectively increase the width of an optical-fiber ribbon formed of reduced-diameter optical fibers so that the optical-fiber ribbon achieves a more conventional optical-fiber ribbon width, thereby facilitating mass-fusion splicing using standard splicing equipment.Type: ApplicationFiled: June 20, 2022Publication date: October 13, 2022Inventors: Ehsan Fallahmohammadi, Clint Nicholaus Anderson, Luca Giorgio De Rai
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Patent number: 11460652Abstract: An optical-fiber ribbon includes intermittent gaps along its longitudinal length in which no bonding material is present across the width of the optical-fiber ribbon. These intermittent gaps without bonding material (e.g., adhesive beads) help to reduce or eliminate bonding-material interference as the optical-fiber ribbon is positioned within an alignment chuck during preparations for mass-fusion splicing.Type: GrantFiled: December 22, 2020Date of Patent: October 4, 2022Assignee: Prysmian S.p.A.Inventors: Ehsan Fallahmohammadi, Clint Nicholaus Anderson, Luca Giorgio De Rai
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Patent number: 11460636Abstract: A fiber separation tool is provided. The fiber separation tool includes a fin configured to maintain the fiber separation tool in a parallel orientation with respect to a plurality of fibers, a hook tip at a first end of the fin, wherein the hook tip is configured to separate the plurality of fibers, a blade disposed in the fin above the hook tip, wherein a portion of a cutting edge of the blade protrudes from a blade opening in the fin, and wherein the blade is configured to slice through a bonding material connecting the plurality of fibers, a lip at each side of the blade opening, wherein the lip is configured to prevent individual fibers of the plurality of fibers from contacting the blade, and a pivot point configured to guide the fiber separation tool between the individual fibers.Type: GrantFiled: March 5, 2020Date of Patent: October 4, 2022Assignee: Prysmian S.p.A.Inventors: Clint Nicholaus Anderson, Ehsan Fallahmohammadi
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Patent number: 11442238Abstract: An optical-fiber ribbon includes optical fibers (e.g., reduced-diameter optical fibers) arranged in parallel within optical-fiber units, wherein at least one adjacent pair of optical-fiber units is separated by a longitudinal adhesive-free spacing for a portion of the optical-fiber ribbon's length. Typically, each adjacent pair of optical-fiber units is separated by an adhesive-free spacing for a respective portion of the optical-fiber assembly's longitudinal length. In an exemplary embodiment, longitudinal adhesive-free spacings effectively increase the width of an optical-fiber ribbon formed of reduced-diameter optical fibers so that the optical-fiber ribbon achieves a more conventional optical-fiber ribbon width, thereby facilitating mass-fusion splicing using standard splicing equipment.Type: GrantFiled: December 22, 2020Date of Patent: September 13, 2022Assignee: Prysmian S.p.A.Inventors: Ehsan Fallahmohammadi, Clint Nicholaus Anderson, Luca Giorgio De Rai
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Publication number: 20220196944Abstract: An optical-fiber ribbon includes intermittent gaps along its longitudinal length in which no bonding material is present across the width of the optical-fiber ribbon. These intermittent gaps without bonding material (e.g., adhesive beads) help to reduce or eliminate bonding-material interference as the optical-fiber ribbon is positioned within an alignment chuck during preparations for mass-fusion splicing.Type: ApplicationFiled: December 22, 2020Publication date: June 23, 2022Inventors: Ehsan Fallahmohammadi, Clint Nicholaus Anderson, Luca Giorgio De Rai
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Publication number: 20220196946Abstract: An optical-fiber ribbon includes optical fibers (e.g., reduced-diameter optical fibers) arranged in parallel within optical-fiber units, wherein at least one adjacent pair of optical-fiber units is separated by a longitudinal adhesive-free spacing for a portion of the optical-fiber ribbon's length. Typically, each adjacent pair of optical-fiber units is separated by an adhesive-free spacing for a respective portion of the optical-fiber assembly's longitudinal length. In an exemplary embodiment, longitudinal adhesive-free spacings effectively increase the width of an optical-fiber ribbon formed of reduced-diameter optical fibers so that the optical-fiber ribbon achieves a more conventional optical-fiber ribbon width, thereby facilitating mass-fusion splicing using standard splicing equipment.Type: ApplicationFiled: December 22, 2020Publication date: June 23, 2022Inventors: Ehsan Fallahmohammadi, Clint Nicholaus Anderson, Luca Giorgio De Rai
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Publication number: 20220155541Abstract: An optical cable includes a plurality of buffer tubes and an outer jacket surrounding the plurality of buffer tubes. Each of the plurality of buffer tubes includes a buffer tube jacket surrounding a plurality of flexible ribbons. The buffer tube jacket includes a first deformable material that has undergone permanent plastic deformation during formation of the optical cable to conform to an irregular axial cross-sectional shape of each respective plurality of flexible ribbons. Each flexible ribbon includes a plurality of optical fibers and a first longitudinal length. For each flexible ribbon, each optical fiber of the plurality of optical fibers is attached to an adjacent optical fiber of the plurality of optical fibers along a bond region comprising a second longitudinal length that is less than the first longitudinal length.Type: ApplicationFiled: January 31, 2022Publication date: May 19, 2022Inventors: Ben H. Wells, Ehsan Fallahmohammadi, Brian G. Risch, Clint Nicholaus Anderson, John R. Sach, Jeffrey Scott Barker
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Publication number: 20220155540Abstract: An optical-fiber ribbon having excellent flexibility, strength, and robustness facilitates separation of an optical fiber from the optical-fiber ribbon without damaging the optical fiber's glass core, glass cladding, primary coating, secondary coating, and ink layer, if present.Type: ApplicationFiled: February 3, 2022Publication date: May 19, 2022Inventors: Ehsan Fallahmohammadi, Clint Nicholaus Anderson, Brian G. Risch, Andrea Terry, John R. Sach, Jeffrey Scott Barker, Ryan Truong
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Patent number: 11262516Abstract: An optical cable includes a plurality of deformable buffer tubes and an outer jacket surrounding the plurality of deformable buffer tubes. Each deformable buffer tube of the plurality of deformable buffer tubes includes a single flexible ribbon including a plurality of optical fibers. Each deformable buffer tube further includes an axial cross-section of the deformable buffer tube that includes the single flexible ribbon. The axial cross-section comprises an irregular shape.Type: GrantFiled: December 7, 2018Date of Patent: March 1, 2022Assignee: PRYSMIAN S.P.A.Inventors: Ben H. Wells, Ehsan Fallahmohammadi, Brian G. Risch, Clint Nicholaus Anderson, John R. Sach, Jeffrey Scott Barker
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Patent number: 11256051Abstract: An optical-fiber ribbon having excellent flexibility, strength, and robustness facilitates separation of an optical fiber from the optical-fiber ribbon without damaging the optical fiber's glass core, glass cladding, primary coating, secondary coating, and ink layer, if present.Type: GrantFiled: April 23, 2020Date of Patent: February 22, 2022Assignee: Prysmian S.p.A.Inventors: Ehsan Fallahmohammadi, Clint Nicholaus Anderson, Brian G. Risch, Andrea Terry, John R. Sach, Jeffrey Scott Barker, Ryan Truong
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Patent number: 11169342Abstract: An optical-fiber ribbon having excellent flexibility, strength, and robustness includes optical fibers having a sacrificial, outer release layer that facilitates separation of an optical fiber from the optical-fiber ribbon without damaging the optical fiber's glass core, glass cladding, primary coating, secondary coating, and ink layer, if present.Type: GrantFiled: August 20, 2020Date of Patent: November 9, 2021Assignee: Prysmian S.p.A.Inventors: Ehsan Fallahmohammadi, Clint Nicholaus Anderson, Brian G. Risch, Andrea Terry, John R. Sach, Jeffrey Scott Barker
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Patent number: 11131816Abstract: The invention relates to an optical fiber ribbon assembly comprising* a plurality of adjacent optical fiber ribbons extending in a longitudinal direction and arranged in a plane, each of the optical fiber ribbons comprising a plurality of optical fibers mutually bonded by a matrix material, the fibers extending in the longitudinal direction and arranged in the plane; said plurality of adjacent ribbons forming at least one set of two adjacent ribbons having an interstice between said two adjacent ribbons and * a bonding material, forming intermittent bonds at the interstice between the two adjacent ribbons of a set, thereby bonding the two adjacent ribbons of the set. The invention also relates to a method of producing such an optical fiber ribbon assembly.Type: GrantFiled: July 11, 2017Date of Patent: September 28, 2021Assignee: Prysmian S.p.A.Inventors: Ehsan Fallahmohammadi, John R. Sach, Ben H. Wells
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Publication number: 20210278593Abstract: A fiber separation tool is provided. The fiber separation tool includes a fin configured to maintain the fiber separation tool in a parallel orientation with respect to a plurality of fibers, a hook tip at a first end of the fin, wherein the hook tip is configured to separate the plurality of fibers, a blade disposed in the fin above the hook tip, wherein a portion of a cutting edge of the blade protrudes from a blade opening in the fin, and wherein the blade is configured to slice through a bonding material connecting the plurality of fibers, a lip at each side of the blade opening, wherein the lip is configured to prevent individual fibers of the plurality of fibers from contacting the blade, and a pivot point configured to guide the fiber separation tool between the individual fibers.Type: ApplicationFiled: March 5, 2020Publication date: September 9, 2021Inventors: Clint Nicholaus Anderson, Ehsan Fallahmohammadi