Patents by Inventor Daniel L. Kessler
Daniel L. Kessler 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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Patent number: 10352868Abstract: A grading lamp for gemstones is disclosed. In one embodiment, the grading lamp includes a base having an open top with a bottom wall bounded by upstanding front, rear, and side walls, and a lid hinged to the rear wall for swinging between open, intermediate, and closed positions relative to the base. The lid includes an interior lamp recess having natural and ultraviolet lights behind a light diffusing filter. A tray within the open top of the base holds color reference stones and a gem under examination. In the intermediate position, the grading lamp mitigates outside ambient light and provides direct light from either the natural or ultraviolet lights.Type: GrantFiled: June 29, 2017Date of Patent: July 16, 2019Assignee: Sy Kessler Sales, Inc.Inventors: Daniel L. Kessler, Henry M. Kessler
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Patent number: 10001466Abstract: A magnifying device for jewelry and system for use of the same are disclosed. In one embodiment of the magnifying device, a securing ring is coupled to a body to selectively attach in a snap-fit engagement with a gem tester. A hinge assembly is also coupled to the body and a support frame is pivotally coupled thereto. A seat within the support frame defines a circular opening securing a magnifying lens therein. The support frame also includes a pivot blade extending therefrom that accepts rotational bearing force to cause the support frame and therefore the magnifying lens to rotate relative to the body.Type: GrantFiled: September 28, 2016Date of Patent: June 19, 2018Assignee: Sy Kessler Sales, Inc.Inventors: Daniel L. Kessler, Henry M. Kessler
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Publication number: 20180003646Abstract: A grading lamp for gemstones is disclosed. In one embodiment, the grading lamp includes a base having an open top with a bottom wall bounded by upstanding front, rear, and side walls, and a lid hinged to the rear wall for swinging between open, intermediate, and closed positions relative to the base. The lid includes an interior lamp recess having natural and ultraviolet lights behind a light diffusing filter. A tray within the open top of the base holds color reference stones and a gem under examination. In the intermediate position, the grading lamp mitigates outside ambient light and provides direct light from either the natural or ultraviolet lights.Type: ApplicationFiled: June 29, 2017Publication date: January 4, 2018Inventors: Daniel L. Kessler, Henry M. Kessler
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Publication number: 20170089880Abstract: A magnifying device for jewelry and system for use of the same are disclosed. In one embodiment of the magnifying device, a securing ring is coupled to a body to selectively attach in a snap-fit engagement with a gem tester. A hinge assembly is also coupled to the body and a support frame is pivotally coupled thereto. A seat within the support frame defines a circular opening securing a magnifying lens therein. The support frame also includes a pivot blade extending therefrom that accepts rotational bearing force to cause the support frame and therefore the magnifying lens to rotate relative to the body.Type: ApplicationFiled: September 28, 2016Publication date: March 30, 2017Inventors: Daniel L. Kessler, Henry M. Kessler
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Patent number: 9395350Abstract: A gem tester for testing a gem under test and a kit including a horizontal recharging stand are disclosed. In one embodiment of the gem tester, an elongated body has a line-of-sight contour tapering from a bulbous end to a radially deviating frontal nose having a probe extending therefrom. Internal circuitry measures electrical conductivity of the gem under test in order to identify the type of gem under test and drive a color control signal in response thereto. A light source is disposed proximate the probe in order to expose the gem under test to ultraviolet light prior to the internal circuitry measuring electrical conductivity. Identification of the gem under test may be made by audio or visual indication or a combination thereof.Type: GrantFiled: July 23, 2014Date of Patent: July 19, 2016Assignee: Sy Kessler Sales, Inc.Inventors: Daniel L. Kessler, Henry M. Kessler
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Patent number: 9285357Abstract: A gem tester for testing a gem under test and a kit including a horizontal recharging stand are disclosed. In one embodiment of the gem tester, an elongated body has a line-of-sight contour tapering from a bulbous end to a radially deviating frontal nose having a probe extending therefrom. Internal circuitry measures electrical and thermal conductivity of the gem under test in order to identify the type of gem under test and drive a color control signal in response thereto. A luminescent mounting extends about the contact to provide, in response to the control signal, a color indication of the identified gem type.Type: GrantFiled: September 15, 2015Date of Patent: March 15, 2016Assignee: Sy Kessler Sales, Inc.Inventors: Daniel L. Kessler, Henry M. Kessler
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Publication number: 20160003795Abstract: A gem tester for testing a gem under test and a kit including a horizontal recharging stand are disclosed. In one embodiment of the gem tester, an elongated body has a line-of-sight contour tapering from a bulbous end to a radially deviating frontal nose having a probe extending therefrom. Internal circuitry measures electrical and thermal conductivity of the gem under test in order to identify the type of gem under test and drive a color control signal in response thereto. A luminescent mounting extends about the contact to provide, in response to the control signal, a color indication of the identified gem type.Type: ApplicationFiled: September 15, 2015Publication date: January 7, 2016Inventors: Daniel L. Kessler, Henry M. Kessler
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Patent number: 9134263Abstract: A gem tester for testing a gem under test and a kit including a horizontal recharging stand are disclosed. In one embodiment of the gem tester, an elongated body has a line-of-sight contour tapering from a bulbous end to a radially deviating frontal nose having a probe extending therefrom. Internal circuitry measures electrical and thermal conductivity of the gem under test in order to identify the type of gem under test and drive a color control signal in response thereto. A luminescent mounting extends about the contact to provide, in response to the control signal, a color indication of the identified gem type.Type: GrantFiled: June 10, 2014Date of Patent: September 15, 2015Assignee: Sy Kessler Sales, Inc.Inventors: Daniel L. Kessler, Henry M. Kessler
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Publication number: 20140337035Abstract: A gem tester for testing a gem under test and a kit including a horizontal recharging stand are disclosed. In one embodiment of the gem tester, an elongated body has a line-of-sight contour tapering from a bulbous end to a radially deviating frontal nose having a probe extending therefrom. Internal circuitry measures electrical conductivity of the gem under test in order to identify the type of gem under test and drive a color control signal in response thereto. A light source is disposed proximate the probe in order to expose the gem under test to ultraviolet light prior to the internal circuitry measuring electrical conductivity. Identification of the gem under test may be made by audio or visual indication or a combination thereof.Type: ApplicationFiled: July 23, 2014Publication date: November 13, 2014Inventors: Daniel L. Kessler, Henry M. Kessler
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Publication number: 20140292358Abstract: A gem tester for testing a gem under test and a kit including a horizontal recharging stand are disclosed. In one embodiment of the gem tester, an elongated body has a line-of-sight contour tapering from a bulbous end to a radially deviating frontal nose having a probe extending therefrom. Internal circuitry measures electrical and thermal conductivity of the gem under test in order to identify the type of gem under test and drive a color control signal in response thereto. A luminescent mounting extends about the contact to provide, in response to the control signal, a color indication of the identified gem type.Type: ApplicationFiled: June 10, 2014Publication date: October 2, 2014Inventors: Daniel L. Kessler, Henry M. Kessler
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Patent number: 8749253Abstract: A gem tester for testing a gem under test and a kit including a horizontal recharging stand are disclosed. In one embodiment of the gem tester, an elongated body has a line-of-sight contour tapering from a bulbous end to a radially deviating frontal nose having a probe extending therefrom. Internal circuitry measures electrical and thermal conductivity of the gem under test in order to identify the type of gem under test and drive a color control signal in response thereto. A luminescent mounting extends about the contact to provide, in response to the control signal, a color indication of the identified gem type.Type: GrantFiled: October 21, 2013Date of Patent: June 10, 2014Assignee: Sy Kessler Sales, Inc.Inventors: Daniel L. Kessler, Henry M. Kessler
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Publication number: 20140043011Abstract: A gem tester for testing a gem under test and a kit including a horizontal recharging stand are disclosed. In one embodiment of the gem tester, an elongated body has a line-of-sight contour tapering from a bulbous end to a radially deviating frontal nose having a probe extending therefrom. Internal circuitry measures electrical and thermal conductivity of the gem under test in order to identify the type of gem under test and drive a color control signal in response thereto. A luminescent mounting extends about the contact to provide, in response to the control signal, a color indication of the identified gem type.Type: ApplicationFiled: October 21, 2013Publication date: February 13, 2014Applicant: Sy Kessler Sales, Inc.Inventors: Daniel L. Kessler, Henry M. Kessler
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Patent number: 8564316Abstract: A gem tester for testing a gem under test and a kit including a horizontal recharging stand are disclosed. In one embodiment of the gem tester, an elongated body has a line-of-sight contour tapering from a bulbous end to a radially deviating frontal nose having a probe extending therefrom. Internal circuitry measures electrical and thermal conductivity of the gem under test in order to identify the type of gem under test and drive a color control signal in response thereto. A luminescent mounting extends about the contact to provide, in response to the control signal, a color indication of the identified gem type.Type: GrantFiled: June 21, 2011Date of Patent: October 22, 2013Assignee: Sy Kessler Sales, Inc.Inventors: Daniel L. Kessler, Henry M. Kessler
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Patent number: D731328Type: GrantFiled: March 4, 2014Date of Patent: June 9, 2015Assignee: Sy Kessler Sales, Inc.Inventors: Daniel L. Kessler, Henry M. Kessler
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Patent number: D771881Type: GrantFiled: July 27, 2015Date of Patent: November 15, 2016Assignee: Sy Kessler Sales, Inc.Inventors: Daniel L. Kessler, Henry M. Kessler
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Patent number: D796749Type: GrantFiled: June 3, 2016Date of Patent: September 5, 2017Assignee: Sy Kessler Sales, Inc.Inventors: Daniel L. Kessler, Henry M. Kessler
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Patent number: D798172Type: GrantFiled: June 29, 2016Date of Patent: September 26, 2017Assignee: Sy Kessler Sales, Inc.Inventors: Daniel L. Kessler, Henry M. Kessler
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Patent number: D810368Type: GrantFiled: July 24, 2015Date of Patent: February 13, 2018Assignee: Sy Kessler Sales, Inc.Inventors: Daniel L. Kessler, Henry M. Kessler
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Patent number: D823368Type: GrantFiled: September 28, 2016Date of Patent: July 17, 2018Assignee: Sy Kessler Sales, Inc.Inventors: Daniel L. Kessler, Henry M. Kessler
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Patent number: D857535Type: GrantFiled: March 29, 2018Date of Patent: August 27, 2019Assignee: Sy Kessler Sales, Inc.Inventors: Daniel L. Kessler, Henry M. Kessler