US5212382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser trapping and method for applications thereof
Assignee: RESEARACH DEVELOPMENT Corp OF JAPAN
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Filing: 1991-12-13
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Granted: 1993-05-18
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Expires: 2011-12-13
Abstract
Abstract This invention provides laser trapping designed to trap a microparticle or a group of microparticles by scanning at least a focused laser beam at high speed. This laser trapping make it possible to control the formation of microparticles into a specified pattern according to the scanning form of the focused laser beam, fix and transport said pattern, and trap and manipulate the microparticles with lower index of refraction than that of a medium, or other photoreflective microparticles such as a metal. Consequently, with increasing degree of freedom of processing and modification on various microparticles, the field of application expands.
Inventors
- 👤 Keiji Sasaki
- 👤 Hiroaki Misawa
- 👤 Noboru Kitamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:36
CPC Classifications
H; H05; H05H; H05H3/00; H05H3/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
46 words
A method for laser trapping of a microparticle or a group of microparticles, by repeatedly scanning said microparticle or group of microparticles with at least a focused laser beam at a sufficiently faster speed than the mechanical response speed of the microparticle to be trapped thereby.
Claim 2
Independent Claim
46 words
A method for laser trapping of a microparticle or a group of microparticles, by repeatedly scanning said microparticle or group of microparticles with at least a focused laser beam at a sufficiently faster speed than the mechanical response speed of the microparticle to be trapped thereby.
Claim 3
Dependent Claim
26 words
The method of laser trapping as claimed in claim 1 wherein the group of microparticles is trapped in a focal track of said focused laser beam.
Claim 4
Dependent Claim
32 words
The method of laser trapping as claimed in claim 1 wherein the microparticle or the group of microparticles is trapped with the focused laser beam scanning around or in the vicinity thereof.
Claim 5
Independent Claim
63 words
A method for processing and modification of microparticles which comprises providing a manipulation means for processing and modification of a microparticle or a group of the microparticles, by trapping them with laser trapping which comprises repeatedly scanning said microparticles with at least a focused laser beam at a sufficiently faster speed than the mechanical response speed of the microparticles to be trapped thereby.
Claim 6
Independent Claim
63 words
A method for processing and modification of microparticles which comprises providing a manipulation means for processing and modification of a microparticle or a group of the microparticles, by trapping them with laser trapping which comprises repeatedly scanning said microparticles with at least a focused laser beam at a sufficiently faster speed than the mechanical response speed of the microparticles to be trapped thereby.
Claim 7
Independent Claim
68 words
A method for dynamic pattern formation of microparticles which comprises pattern formation or transportation of a group of microparticles by trapping them with laser trapping which comprises repeatedly scanning said microparticles with at least a focused laser beam at a sufficiently faster speed than the mechanical response speed of the microparticles to be trapped thereby, said microparticles being trapped in the focal track of said focused laser beam.
Claim 8
Independent Claim
68 words
A method for dynamic pattern formation of microparticles which comprises pattern formation or transportation of a group of microparticles by trapping them with laser trapping which comprises repeatedly scanning said microparticles with at least a focused laser beam at a sufficiently faster speed than the mechanical response speed of the microparticles to be trapped thereby, said microparticles being trapped in the focal track of said focused laser beam.
References Cited (Backward Citations)
US3710279A
Cited
US4023158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-17 | 1996-11-16 | 1997-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-17 | 2000-11-16 | 2001-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-17 | 2004-11-16 | 2005-05-18 | $7700.00 | Window Closed / Lapsed |