Patents by Inventor Mahmoud El-Sherif
Mahmoud El-Sherif 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: 20230413979Abstract: A method and a system for skin exfoliation and rejuvenation uses dual-function plates mounted on the front edge of a handheld system in a multi-step process. One step uses microdermabrasion using diamond diamond-tipped wands to cleanse and exfoliate and remove dead skin. In another dual-function process, a roller equipped with micro-needles and skin care products generates collagen for firmer toned skin. Moving the micro-needling roller on the skin helps with fine lines and wrinkles removal. Also, a dual-function plate uses laser diodes in the visible band, which has a high skin absorption property, to generate non-injuring heat, stimulating blood flow in the outer tissue layer. The laser treatment is used for skin tightening to repair sagging skin, while applying the proper serum to the heated skin. The dual-function plate is used for skin massaging with a special serum treatment and application.Type: ApplicationFiled: September 12, 2023Publication date: December 28, 2023Applicant: Skin Aesthetics Inc.Inventors: Mahmoud A. El-Sherif, Bruce Sheeran
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Patent number: 11786438Abstract: A system for facial and skin treatment includes a universal skin exfoliating and rejuvenating system that uses dual-function plate mounted onto the front edge of the hand-held system in a multi-step process. One step used in the multi-step process includes of a microdermabrasion procedure using diamond-tipped wands fixed on a dual-function plate to cleanse and exfoliate dead skin that simultaneously removes the dead skin away. In another dual-function process, a plate equipped with micro-needles and skin care products is used to generate collagen for firmer toned skin. The micro-needles are fixed on moving parts or roller, to help with fine lines, wrinkles, and large pores. Also, a dual-function plate is used for skin massage and special serum treatment and application. The handheld system is equipped with a miniature vacuum pump, mini supply containers, and control parts to supply serums and skincare products to the dual-function plates.Type: GrantFiled: July 19, 2021Date of Patent: October 17, 2023Assignee: Skin Aesthetics Inc.Inventors: Mahmoud A. El-Sherif, Bruce Sheeran
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Publication number: 20230013440Abstract: A system for facial and skin treatment includes a universal skin exfoliating and rejuvenating system that uses dual-function plate mounted onto the front edge of the hand-held system in a multi-step process. One step used in the multi-step process includes of a microdermabrasion procedure using diamond-tipped wands fixed on a dual-function plate to cleanse and exfoliate dead skin that simultaneously removes the dead skin away. In another dual-function process, a plate equipped with micro-needles and skin care products is used to generate collagen for firmer toned skin. The micro-needles are fixed on moving parts or roller, to help with fine lines, wrinkles, and large pores. Also, a dual-function plate is used for skin massage and special serum treatment and application. The handheld system is equipped with a miniature vacuum pump, mini supply containers, and control parts to supply serums and skincare products to the dual-function plates.Type: ApplicationFiled: July 19, 2021Publication date: January 19, 2023Applicant: Skin Aesthetics CompanyInventors: Mahmoud A. El-Sherif, Bruce Sheeran
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Patent number: 10883870Abstract: The fiber optic probe detects changes in ultrasound pressure in an immersion medium such as a liquid, a gas, or a solid, where the system includes an optical fiber probe having a fiber of the probe has a highly doped (or regular) core with a diameter in the range 5 to 10 ?m and a clad diameter equal to or more than 50 ?m; and the optical fiber tip has been modified in a D-shaped (or V-shaped) structure where the clad material has been removed from one side of the cylindrical fiber to the surface of the fiber core; then, this modified region of the fiber is coated, with a very thin layer of a metallic material, ranging from 3 to 10 nm.Type: GrantFiled: November 5, 2019Date of Patent: January 5, 2021Assignee: Drexel UniversityInventors: Mahmoud A. El-Sherif, Afshin S. Daryoush, Peter A. Lewin, Rupa Gopinath Minasamudram
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Publication number: 20200080887Abstract: The fiber optic probe detects changes in ultrasound pressure in an immersion medium such as a liquid, a gas, or a solid, where the system includes an optical fiber probe having a fiber of the probe has a highly doped (or regular) core with a diameter in the range 5 to 10 ?m and a clad diameter equal to or more than 50 ?m; and the optical fiber tip has been modified in a D-shaped (or V-shaped) structure where the clad material has been removed from one side of the cylindrical fiber to the surface of the fiber core; then, this modified region of the fiber is coated, with a very thin layer of a metallic material, ranging from 3 to 10 nm.Type: ApplicationFiled: November 5, 2019Publication date: March 12, 2020Applicant: Drexel UniversityInventors: Mahmoud A. El-Sherif, Afshin S. Daryoush, Peter A. Lewin, Rupa Gopinath Minasamudram
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Patent number: 10466096Abstract: A sensing method is based on using a special fiberoptic probe for detection of acoustic/ultrasound pressure in an immersion medium. The developed system is highly sensitive in detecting ultrasound waves up to 100 MHz, for imaging of micro structures and more. For applications up to 100 MHz, without spatial averaging corrections, the probe tip is modified by reducing the fiber diameter to 7 um or less. Also, to maximize acousto-optic interaction, the probe tip, not just its end face, may be coated with a thin layer of metallic material. This thin film coating satisfies partial transparency of the metallic coating. The coating thickness may range from 2 nm to 10 nm or others depending on the type of the coating material. The probe detects the pressure of acoustic and/or ultrasound waves propagating within an immersion medium, whenever the probe tip is immersed inside the medium, and having a reasonable immersion contact surface.Type: GrantFiled: April 3, 2017Date of Patent: November 5, 2019Assignee: Drexel UniversityInventors: Mahmoud A. El-Sherif, Afshin S. Daryoush, Peter A. Lewin, Rupa Gopinath Minasamudram
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Patent number: 9823113Abstract: Disclosed is detecting changes in pressure in a medium, with an optical fiber having a core diameter at an immersion surface contact of the fiber of less than 10 ?m; a layer of material deposited on said end of the fiber, the material being of a thickness of from about 2 nm to about 10 nm. Also disclosed is detecting pressure waves in a medium comprising: contacting the medium with a fiber optic, the fiber integrated with a light source and a detector, the fiber optic having a diameter of less than 10 ?m at an immersion surface contact of the fiber; providing a thin layer of material on the immersion surface contact, wherein said thin layer of material is of a thickness in a range of from about 2 nm to about 10 nm; and detecting Fresnel back reflections from the immersion end of the fiber.Type: GrantFiled: January 21, 2014Date of Patent: November 21, 2017Assignee: Drexel UniversityInventors: Afshin S Daryoush, Peter A Lewin, Rupa Gopinath Minasamudram, Mahmoud El-Sherif
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Publication number: 20170199076Abstract: A sensing method is based on using a special fiberoptic probe for detection of acoustic/ultrasound pressure in an immersion medium. The developed system is highly sensitive in detecting ultrasound waves up to 100 MHz, for imaging of micro structures and more. For applications up to 100 MHz, without spatial averaging corrections, the probe tip is modified by reducing the fiber diameter to 7 um or less. Also, to maximize acousto-optic interaction, the probe tip, not just its end face, may be coated with a thin layer of metallic material. This thin film coating satisfies partial transparency of the metallic coating. The coating thickness may range from 2 nm to 10 nm or others depending on the type of the coating material. The probe detects the pressure of acoustic and/or ultrasound waves propagating within an immersion medium, whenever the probe tip is immersed inside the medium, and having a reasonable immersion contact surface.Type: ApplicationFiled: April 3, 2017Publication date: July 13, 2017Applicant: Drexel UniversityInventors: Mahmoud A. El-Sherif, Afshin S. Daryoush, Peter A. Lewin, Rupa Gopinath Minasamudram
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Patent number: 8805136Abstract: A method and apparatus for tunable on-fiber Bragg gratings for DWDM and other applications on a small section of the core of single mode communication of an optical fiber. The method comprises etching most of the cladding on a small section of the fiber; coating the etched portion with a metallic electrode material and then with a layer of an electrooptic material; coating the electrooptic material with a photoresist; producing the Bragg grating pattern using a holographic process or on-axis interferometry; dissolving the non-exposed photoresist,; etching the grating pattern into the electrooptic material, and coating the Bragg gratings with a metallic material constructing the outer electrode. The presence of an electric signal on the electrodes will change the optical properties of the electrooptic material, as well as the diffraction/reflection properties of the Bragg gratings.Type: GrantFiled: May 8, 2006Date of Patent: August 12, 2014Assignee: Photonics On-Fiber Devices, Inc.Inventor: Mahmoud A. El-Sherif
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Publication number: 20140133280Abstract: Disclosed is detecting changes in pressure in a medium, with an optical fiber having a core diameter at an immersion surface contact of the fiber of less than 10 ?m; a layer of material deposited on said end of the fiber, the material being of a thickness of from about 2 nm to about 10 nm. Also disclosed is detecting pressure waves in a medium comprising: contacting the medium with a fiber optic, the fiber integrated with a light source and a detector, the fiber optic having a diameter of less than 10 ?m at an immersion surface contact of the fiber; providing a thin layer of material on the immersion surface contact, wherein said thin layer of material is of a thickness in a range of from about 2 nm to about 10 nm; and detecting Fresnel back reflections from the immersion end of the fiber.Type: ApplicationFiled: January 21, 2014Publication date: May 15, 2014Inventors: Afshin S. Daryoush, Peter A. Lewin, Rupa Gopinath Minasamudram, Mahmoud El-Sherif
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Patent number: 8661908Abstract: Disclosed is detecting changes in pressure in a medium, with an optical fiber having a core diameter at an immersion surface contact of the fiber of less than 10 ?m; a layer of material deposited on said end of the fiber, the material being of a thickness of from about 2 nm to about 10 nm. Also disclosed is detecting pressure waves in a medium comprising: contacting the medium with a fiber optic, the fiber integrated with a light source and a detector, the fiber optic having a diameter of less than 10 ?m at an immersion surface contact of the fiber; providing a thin layer of material on the immersion surface contact, wherein said thin layer of material is of a thickness in a range of from about 2 nm to about 10 nm; and detecting Fresnel back reflections from the immersion end of the fiber.Type: GrantFiled: June 1, 2011Date of Patent: March 4, 2014Assignee: Drexel UniversityInventors: Afshin S. Daryoush, Peter A. Lewin, Rupa Gopinath Minasamudram, Mahmoud A. El-Sherif
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Publication number: 20110305118Abstract: Disclosed is detecting changes in pressure in a medium, with an optical fiber having a core diameter at an immersion surface contact of the fiber of less than 10 ?m; a layer of material deposited on said end of the fiber, the material being of a thickness of from about 2 nm to about 10 nm. Also disclosed is detecting pressure waves in a medium comprising: contacting the medium with a fiber optic, the fiber integrated with a light source and a detector, the fiber optic having a diameter of less than 10 ?m at an immersion surface contact of the fiber; providing a thin layer of material on the immersion surface contact, wherein said thin layer of material is of a thickness in a range of from about 2 nm to about 10 nm; and detecting Fresnel back reflections from the immersion end of the fiber.Type: ApplicationFiled: June 1, 2011Publication date: December 15, 2011Applicant: DREXEL UNIVERSITYInventors: Afshin S. Daryoush, Peter A. Lewin, Rupa Gopinath Minasamudram, Mahmoud A. El-Sherif
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Patent number: 7373024Abstract: Application of a communication signal, RF (radio frequency) or microwave signal to a modified optical fiber for modulating or switching-off the optical signal propagating within the optical fiber. The passive cladding material of an ordinary optical fiber is removed from a small region and the fiber is coated with one or more layers of coated materials including a layer of electrooptic material surrounding the fiber core. A microwave cavity is positioned around the modified fiber where the optical fiber is passing through the cavity in the direction of the cavity main axis to provide a modulating microwave electromagnetic field applied to the electrooptic material. A communication signal applied to the microwave cavity will result in optical modulation so that the modulated intensity and phase of the optical signal at the receiving end of the fiber can be detected, and demodulation of the signal can be achieved.Type: GrantFiled: January 29, 2007Date of Patent: May 13, 2008Assignee: Photonics On-Fiber Devices, Inc.Inventor: Mahmoud A. El-Sherif
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Publication number: 20070274620Abstract: Application of a communication signal, RF (radio frequency) or microwave signal to a modified optical fiber for modulating or switching-off the optical signal propagating within the optical fiber. The passive cladding material of an ordinary optical fiber is removed from a small region and the fiber is coated with one or more layers of coated materials including a layer of electrooptic material surrounding the fiber core. A microwave cavity is positioned around the modified fiber where the optical fiber is passing through the cavity in the direction of the cavity main axis to provide a modulating microwave electromagnetic field applied to the electrooptic material. A communication signal applied to the microwave cavity will result in optical modulation so that the modulated intensity and phase of the optical signal at the receiving end of the fiber can be detected, and demodulation of the signal can be achieved.Type: ApplicationFiled: January 29, 2007Publication date: November 29, 2007Inventor: Mahmoud El-Sherif
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Publication number: 20070258673Abstract: A method and apparatus for tunable on-fiber Bragg gratings for DWDM and other applications on a small section of the core of single mode communication of an optical fiber. The method comprises etching most of the cladding on a small section of the fiber; coating the etched portion with a metallic electrode material and then with a layer of an electrooptic material; coating the electrooptic material with a photoresist; producing the Bragg grating pattern using a holographic process or on-axis interferometry; dissolving the non-exposed photoresist,; etching the grating pattern into the electrooptic material, and coating the Bragg gratings with a metallic material constructing the outer electrode. The presence of an electric signal on the electrodes will change the optical properties of the electrooptic material, as well as the diffraction/reflection properties of the Bragg gratings.Type: ApplicationFiled: May 8, 2006Publication date: November 8, 2007Inventor: Mahmoud El-Sherif
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Patent number: 7228012Abstract: Application of a communication signal, RF (radio frequency) or microwave signal to a modified optical fiber for modulating or switching-off the optical signal propagating within the optical fiber. The passive cladding material of an ordinary optical fiber is removed from a small region and replaced with active multilayer materials including at least three layers of cladding surrounding the core. These layers are the inner metallic electrode coated on the surface of the optical fiber core, the electrooptic active material layer placed on the top of the inner electrode, and the outer metallic electrode coated on the top of the electrooptic material. A communication signal applied to the electrodes will result in optical modulation so that the modulated intensity and phase of the optical signal at the receiving end of the fiber can be detected, and demodulation of the signal can be achieved.Type: GrantFiled: August 1, 2005Date of Patent: June 5, 2007Assignee: Photonics On-Fiber Devices, Inc.Inventor: Mahmoud A. El-Sherif
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Publication number: 20070025656Abstract: Application of a communication signal, RF (radio frequency) or microwave signal to a modified optical fiber for modulating or switching-off the optical signal propagating within the optical fiber. The passive cladding material of an ordinary optical fiber is removed from a small region and replaced with active multilayer materials including at least three layers of cladding surrounding the core. These layers are the inner metallic electrode coated on the surface of the optical fiber core, the electrooptic active material layer placed on the top of the inner electrode, and the outer metallic electrode coated on the top of the electrooptic material. A communication signal applied to the electrodes will result in optical modulation so that the modulated intensity and phase of the optical signal at the receiving end of the fiber can be detected, and demodulation of the signal can be achieved.Type: ApplicationFiled: August 1, 2005Publication date: February 1, 2007Inventor: Mahmoud El-Sherif
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Patent number: 7149391Abstract: An on-fiber tunable coupler and switch for communication systems. Two optical fibers are modified by replacing passive cladding with at least an inner metallic electrode, an electrooptic material layer on the inner electrode, and an outer metallic electrode on the electrooptic material. The optical fibers are positioned close to each other. More layers can be coated between any of these layers to improve the interface properties or reflectivity. The presence of an electric signal, will change the optical properties of the modified cladding, as will the propagation characteristics of the optical signal within one fiber core. This will permit tunable coupling of the signal from the first fiber core to the second fiber core(s). The coupling coefficient between the first and the second fiber(s) is adjustable. Switch-off the signal output from the first fiber to the second fiber is achieved at 100% coupling ratio.Type: GrantFiled: August 1, 2005Date of Patent: December 12, 2006Assignee: Photonics On-Fiber Devices, Inc.Inventor: Mahmoud A. El-Sherif
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Patent number: 6299104Abstract: A system and method for evaluating flexible structures such as textiles under load generally. A specific embodiment is shown for parachutes. A plurality of first sensors and second sensors are attached to the parachute on its canopy and suspension lines. Preferred first sensors are fiber Bragg gratings (FBG) type sensors, and preferred second sensors are modal power distribution (MPD) type sensors. A fiber optic network interconnects the pluralities of first and second sensors to provide sensor outputs which are converted to electronic signals, modulated and transmitted to a receiving station for receiving and processing the transmitted modulated electronic signals. The preferred fiber optic network includes a plurality of light emitting diodes positioned at one end of each fibers and a photodiode array positioned to receive light from each of the fibers.Type: GrantFiled: August 3, 2000Date of Patent: October 9, 2001Assignee: Photonics Laboratories, Inc.Inventors: Mahmoud A. El-Sherif, Dina M. El-Sherif, Calvin K. Lee
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Patent number: 5060307Abstract: An optical fiber switch and modulator component comprising applying a signal, such as, an electrical, magnetic, or microwave signal to a single optical fiber which has a region of uncladding, i.e.Type: GrantFiled: June 19, 1989Date of Patent: October 22, 1991Inventor: Mahmoud A. El-Sherif