I believe the two critical ones are (with exp dates): 4759064 Blind unanticipated signature systems (19 Jul 2005) 4759063 Blind signature systems (19 Jul 2005)
I can't seem to find a database with who currently owns a patent. I suspect it doesn't exist, which is unfortunate, since it is we the people who have given the monopoly on this idea, but we can't find out *who* has that monopoly. myers On Wed, 2002-10-30 at 14:39, [EMAIL PROTECTED] wrote: > FYI > A list of patents that reference digicash > > US 5999625 A USPAT Bellare, Mihir et al. > US 6205435 B1 USPAT Biffar, Peter > US 6047269 A USPAT Biffar, Peter > US 5903880 A USPAT Biffar, Peter C. > US 5870473 A USPAT Boesch, Brian Paul et al. > US 5878140 A USPAT Chaum, David > US 5781631 A USPAT Chaum, David > US 5712913 A USPAT Chaum, David > US 5956400 A USPAT Chaum, David et al. > US 5485520 A USPAT Chaum, David et al. > US 5796841 A USPAT Cordery, Robert A. et al. > US 6282522 B1 USPAT Davis, Virgil M. et al. > US 6021399 A USPAT Demers, Alan J. et al. > US 5952638 A USPAT Demers, Alan J. et al. > US 5857023 A USPAT Demers, Alan J. et al. > US 6138107 A USPAT Elgamal, Taher > US 5671279 A USPAT Elgamal, Taher > US 6378075 B1 USPAT Goldstein, Theodore C. et al. > US 6308270 B1 USPAT Guthery, Scott B. > US 6341353 B1 USPAT Herman, Gary et al. > US 6370543 B2 USPAT Hoffert, Eric M. et al. > US 6282549 B1 USPAT Hoffert, Eric M. et al. > US 5983176 A USPAT Hoffert, Eric M. et al. > US 5903892 A USPAT Hoffert, Eric M. et al. > US 5768391 A USPAT Ichikawa, Bryan K. > US 6446052 B1 USPAT Juels, Ari > US 5729594 A USPAT Klingman, Edwin E. > US 5839119 A USPAT Krsul, Ivan V. et al. > US 5848161 A USPAT Luneau, Greg et al. > US 6119229 A USPAT Martinez, Ronald et al. > US 6157966 A USPAT Montgomery, Michael A. et al. > US 6341351 B1 USPAT Muralidhran, N. et al. > US 5952639 A USPAT Ohki, Masayuki et al. > US 6314409 B1 USPAT Schneck, Paul B. et al. > US 5933498 A USPAT Schneck, Paul B. et al. > US 5903721 A USPAT Sixtus, Timothy > US 5999967 A USPAT Sundsted, Todd > US 6467685 B1 USPAT Teicher, Mordechai > US 6119946 A USPAT Teicher, Mordechai > US 5815665 A USPAT Teper, Jeffrey A. et al. > US 6415271 B1 USPAT Turk, James J. et al. > US 5983207 A USPAT Turk, James J. et al. > US 6272536 B1 USPAT van Hoff, Arthur A et al. > US 5919247 A USPAT Van Hoff, Arthur et al. > US 6267292 B1 USPAT Walker, Jay S. et al. > US 6263505 B1 USPAT Walker, Jay S. et al. > US 5949875 A USPAT Walker, Jay S. et al. > US 5949044 A USPAT Walker, Jay S. et al. > US 5956699 A USPAT Wong, Jacob Y. et al. > US 5937394 A USPAT Wong, Jacob Y. et al. > US 5913203 A USPAT Wong, Jacob Y. et al. > > /john > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:myers@;maski.org] > Sent: Wednesday, October 30, 2002 1:33 PM > To: [EMAIL PROTECTED] > Subject: E-C Logix: current patent holder for the DigiCash patents? > > > While poking around the net today I think I might have come across the > new holders of the DigiCash patents, or at least a licensee. As far as > I find other sources about who owns the patents it went from > DigiCash -> eCash Technologies -> InfoSpace > I have not found evidence to link these people from InfoSpace. > > You can find it at http://www.e-clogix.com/ , but prepare to use "view > source" quite a bit if you aren't using IE. > > Some points of interest: > http://www.e-clogix.com/about.html > This appears to be a venture of a Todd Stinson in Lincoln, Nebraska > (you gotta love the photoshop hacked logo on the picture of the building). > The email > [EMAIL PROTECTED] bounced, and I have not attempted to call them. > > A response an editorial on ecash in Barron's published April 23, 2001 > (if anyone has the original please let me know) > http://www.e-clogix.com/editorials/barrons_rebuttal.html > > Interesting links that are 404: > Demo site: http://www.e-clogix.com/Bank/index.html > > Anyone know anyone involved in this? > > myers
