Invalidity dossier
US 5762496
Disposable dental saliva ejector
Current assignee: Koping Industri Plast AB
Added 9/23/2026, 2:41:03 PM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 5,762,496 A
Title: Disposable dental saliva ejector
Patent number: US 5,762,496 A
Application number: US 08/520,956
Inventors: Christer Albertsson, Matts Folko, Bengt Mattsson
Original/current assignees (as listed): Koping Industri Plast AB; Dry Invent Bengt Mattsson AB
Dates (as listed): Priority date 1994-09-02 (priority claimed from SE9402926A; also SE9501025A, 1995-03-17); filing date 1995-08-30; publication/grant date 1998-06-09; anticipated expiration 2015-08-30. Legal status: Expired – Fee Related.
Purpose: A disposable dental saliva ejector for dental operations serving a double purpose: keeping the operational field in the oral cavity dry and pressing down and holding back the patient's tongue.
Plain-language scope (from the supplied text): The ejector combines a stem with three coplanar parts — a tubular suction part with at least one suction orifice, a straight holder part with a free lower end, and a curved intermediate part — plus a chin plate displaceably mounted on the holder part and a duct means running from the suction part to the holder part's free end for connection to evacuation tubing. The holder part has a trough-shaped, U-cross-section guiding channel with two longitudinal edges. The chin plate's mounting sleeve has a non-circular opening with a curved first section matching the holder part's outer curvature, straight shanks, and a second section with two lobes and a back-up portion, letting the chin plate occupy a central and at least one swung-out lateral position. Optional features include cooperating releasable locking/stop means for height and lateral positions, a flexible tube duct means held compressed, and a tongue holder attached to the suction part as a frame structure that can bear a disposable filter element.
Source: https://patents.google.com/patent/US5762496/en
What the excerpt does not establish: It supplies only an excerpted description and figure list (ending mid-sentence at FIG. 6), with no full claim text, no abstract, no complete drawings, and no prior-art citations beyond the two Swedish patents and U.S. Pat. No. 3,753,292 mentioned. It does not establish claim scope, examination history, or the accuracy of listed assignees/dates.
Generated 10/1/2026, 9:52:04 PM
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Litigation summary
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PTAB challenges
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Assignment history
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Prior art
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Obviousness
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Extensions
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Derivative works
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