High-purity quartz powder, process for producing the same,...

Details High-purity quartz powder, process for producing the same,... High-purity quartz powder, process for producing the same,...

2006-04-18

2008-09-23

Green, Anthony J (Department: 1793)

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

C423S335000, C501S012000, C501S054000, C501S133000, C501S154000, C106S287340, C065S017200, C065S017300

Reexamination Certificate

active

07427387

ABSTRACT:
Subjects for the invention are to obtain a quartz powder having a high purity and high quality and a process for producing the same and to obtain a glass molding formed by melting and molding the powder and extremely reduced in bubble inclusion.The invention provides a quartz powder, preferably a synthetic quartz powder obtained by the sol-gel method, which, upon heating from room temperature to 1,700° C., generates gases in which the amount of CO is 300 nl/g or smaller and the amount of CO2is 30 nl/g or smaller.

REFERENCES:
patent: 5211733 (1993-05-01), Fukao et al.
patent: 5516350 (1996-05-01), Onoda et al.
patent: 6110852 (2000-08-01), Katsuro et al.
patent: 6129899 (2000-10-01), Katsuro et al.
patent: 7063826 (2006-06-01), Katsuro et al.
patent: 2002/0017114 (2002-02-01), Fukui et al.
patent: 629580 (1994-12-01), None
patent: 59-9497 (1984-03-01), None
patent: 2-289416 (1990-11-01), None
patent: 4-154613 (1992-05-01), None
patent: 4-342412 (1992-11-01), None
patent: 5-17122 (1993-01-01), None
patent: 7-2513 (1995-01-01), None
patent: 7-206422 (1995-08-01), None
patent: 8-183621 (1996-07-01), None
patent: 11-139835 (1999-05-01), None
patent: 2001-261353 (2001-09-01), None
Machine Translation of Japanese Patent Specification No. JP8-183621A (Jul. 1996).
Richard J. Lewis, Sr., Hawley's Condensed Chemical Dictionary, Twelfth Edition, Van Nostrand Reinhold Company, New York, 1993, p. 28, no month.

Affiliated with

Also associated with

Rating

High-purity quartz powder, process for producing the same,... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High-purity quartz powder, process for producing the same,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-purity quartz powder, process for producing the same,... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3971486