Plastic article or earthenware shaping or treating: apparatus – Means applying electrical or wave energy directly to work – Radiated energy
Reexamination Certificate
2004-07-14
2008-11-04
Theisen, Mary Lynn F (Department: 1791)
Plastic article or earthenware shaping or treating: apparatus
Means applying electrical or wave energy directly to work
Radiated energy
C425S375000
Reexamination Certificate
active
07445441
ABSTRACT:
The invention includes a three-dimensional printing (3DP) machine that has at least one ultraviolet (UV) light source directed at powder or slurry being processed by the 3DP machine and/or directed at any of various surfaces or machine components, in a manner suitable to kill or damage microorganisms to a desired extent. The UV light sources may be either stationary or movable, and may be either pulsed or substantially continuous, and may operate in any desired sequence and timing with respect to other operations performed by the machine. The invention may include ultraviolet illumination in such a way as to interact with powder to sterilize or disinfect powder either while the powder is stationary or, alternatively, as powder is being moved from one place to another within the 3DP machine, or both. The invention also includes methods of performing three-dimensional printing using such illumination. The invention also includes the combination of other methods of sterilization or disinfection with the use of ultraviolet light. The invention also includes the use of ultraviolet light sources for a combination of polymerization/cross-linking in addition to sterilization/disinfection.
REFERENCES:
patent: 5204055 (1993-04-01), Sachs et al.
patent: 5387380 (1995-02-01), Cima et al.
patent: 6658314 (2003-12-01), Gothait
patent: 6905645 (2005-06-01), Iskra
patent: 7270528 (2007-09-01), Sherwood
patent: 2001/0050031 (2001-12-01), Bredt et al.
patent: 2002/0105114 (2002-08-01), Kubo et al.
patent: 2003/0151167 (2003-08-01), Kritchman et al.
patent: 2005/0003189 (2005-01-01), Bredt et al.
patent: 2005/0110200 (2005-05-01), Fong
patent: 2006/0208388 (2006-09-01), Bredt et al.
patent: 2007/0173967 (2007-07-01), Kritchman et al.
patent: 3933142 (1990-04-01), None
patent: 20201493 (2003-05-01), None
Gaylo Christopher M.
Litwak Alfred Anthony
Liu Qing
Materna Peter A.
West Thomas George
Eichenberger Robert H.
Killmeier Eric L.
Middleton & Reutlinger
Theisen Mary Lynn F
Therics, LLC
LandOfFree
Three-dimensional printing apparatus and methods of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Three-dimensional printing apparatus and methods of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three-dimensional printing apparatus and methods of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4051592