US5908295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental handpiece with lighting means
Assignee: Nakanishi Inc
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Filing: 1998-05-28
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Granted: 1999-06-01
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Expires: 2018-05-28
Abstract
Abstract A dental handpiece is disclosed, which contains a handpiece body for giving dental treatment on a site in oral cavity of a patient, and an optical semiconductor device in the handpiece body for illuminating the site during the treatment. The optical semiconductor device is preferably LED, more preferably VLED.
Inventors
- 👤 Sosaku Kawata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:49
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/08; A61C1/088; A61C1/02; A61C1/05; A61C1/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
52 words
A dental handpiece comprising a handpiece body for giving dental treatment on a site in oral cavity of a patient, said handpiece body including a turbine head having a neck and a coupling, and an optical semiconductor device in said neck of the handpiece body for illuminating said site during the treatment.
Claim 2
Dependent Claim
52 words
A dental handpiece comprising a handpiece body for giving dental treatment on a site in oral cavity of a patient, said handpiece body including a turbine head having a neck and a coupling, and an optical semiconductor device in said neck of the handpiece body for illuminating said site during the treatment.
Claim 3
Dependent Claim
17 words
The dental handpiece as in claim 1 wherein said optical device is a light emitting diode (LED).
Claim 4
Dependent Claim
19 words
The dental handpiece as in claim 2 wherein said light emitting diode is a visible light emitting diode (VLED).
Claim 5
Dependent Claim
31 words
The dental handpiece as in claim 1 wherein said neck has a light project window in a distal portion of said neck, said window being in alignment with said optical device.
Claim 6
Dependent Claim
49 words
A dental handpiece comprising a handpiece body for giving dental treatment on a site in oral cavity of a patient, said handpiece body including a turbine head and a coupling; and an optical semiconductor device located in said coupling of the handpiece body for illuminating said site during treatment.
Claim 7
Dependent Claim
49 words
A dental handpiece comprising a handpiece body for giving dental treatment on a site in oral cavity of a patient, said handpiece body including a turbine head and a coupling; and an optical semiconductor device located in said coupling of the handpiece body for illuminating said site during treatment.
Claim 8
Dependent Claim
48 words
The dental handpiece as in claim 5 wherein said turbine head has a light projecting window in a distal portion of said turbine head, and wherein a light transmitting device extends through the turbine head to said window to transmit light from said optical device to said window.
Claim 9
Dependent Claim
17 words
The dental handpiece as in claim 5 wherein said optical device is a light emitting diode (LED).
Claim 10
Dependent Claim
19 words
The dental handpiece as in claim 7 wherein said light emitting diode is a visible light emitting diode (VLED).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-05-31 | 2002-11-30 | 2003-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-05-31 | 2006-11-30 | 2007-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-05-31 | 2010-11-30 | 2011-06-01 | $7700.00 | Window Closed / Lapsed |