Solid material comminution or disintegration – Processes – By operations other than force of contact with solid surface
Reexamination Certificate
2004-12-14
2009-10-06
Nguyen, Jimmy T (Department: 3725)
Solid material comminution or disintegration
Processes
By operations other than force of contact with solid surface
C241S021000, C241S301000
Reexamination Certificate
active
07597277
ABSTRACT:
A production apparatus which includes: a treatment chamber, containing a to-be-treated liquid, made up of water, which is a solvent, and raw material particles of a substance; a laser light source, illuminating laser light for microparticulation onto the to-be-treated liquid; an ultrasonic transducer, irradiating ultrasonic waves for preventing aggregation of microparticles; and a controlling device, controlling the laser light illumination by the laser light source and the ultrasonic wave irradiation by the ultrasonic transducer. A vibration amplitude of the treatment chamber is monitored by means of a microphone and a vibration amplitude measuring device to set the frequency of the ultrasonic waves to a resonance vibration frequency. A microparticle production method and production apparatus that enable substances to be microparticulated efficiently by photo-pulverization, and microparticles are thus realized.
REFERENCES:
patent: 5585044 (1996-12-01), Kawakami et al.
patent: 6431476 (2002-08-01), Taylor et al.
patent: 11-269432 (1999-10-01), None
patent: 2001-113159 (2001-04-01), None
patent: WO 2004/020086 (2004-03-01), None
patent: WO 2004/080586 (2004-09-01), None
patent: WO 2005/049213 (2005-06-01), None
patent: WO 2005/058480 (2005-06-01), None
patent: WO 2005/082521 (2005-09-01), None
patent: WO 2005/092489 (2005-10-01), None
Yoshiaki Tamaki et al., “Tailoring nanoparticles of aromatic and dye molecules by excimer laser irradiation,” Applied Surface Science 168 (2000) 85-88.
Yoshiaki Tamaki et al., “Nanoparticle Formation of Vanadyl Phthalocyanine by Laser Ablation of Its Crystalline Powder in a Poor Solvent,” J. Phys. Chem. A 2002, 106, 2135-2139.
Takeshi Sasaki et al., “Preparation of Platinum-Titanium Oxide Composite Particulate by Laser Ablation in Aqueous Solutions,” The Japan Society of Applied Physics 64thAnnual Meeting Digest (Autumn 2003, Fukuoka University), p. 1032, and its English language translation.
Bo Li et al., “Enhancement of organic nanoparticle preparation by laser ablation in aqueous solution using surfactants,” Applied Surface Science 210 (2003) 171-176.
Bo Li et al., “Surfactant effects on optical absorption spectra of iron phthalocyanine nanoparticles in water,” Materials Research Bulletin 39 (2004) 1265-1269.
Hiramatsu Mitsuo
Kawakami Tomonori
Takagi Tokio
Drinker Biddle & Reath LLP
Hamamatsu Photonics K.K.
Nguyen Jimmy T
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