DR. DAVID CHAN, M.D., M.SC.
Osteopathic Medicine at Francis St, Boston, MA

7184641, Feb 27, 2007

May 6, 2005

11/123424

Aristeidis Karalis - Cambridge MA, US
David Chan - Cambridge MA, US
Yoel Fink - Cambridge MA, US
Kerwyn C. Huang - Princeton NJ, US
Mihai Ibanescu - Cambridge MA, US
John D. Joannopoulos - Belmont MA, US
Elefterios Lidorikis - Arlington MA, US
Evan Reed - Pine Island MN, US
Marin Soljacic - Somerville MA, US

Massachusetts Institute of Technology - Cambridge MA

G02B 6/10

385129, 385131, 385122, 385147

A new class of surface plasmon waveguides is presented. The basis of these structures is the presence of surface plasmon modes, supported on the interfaces between the dielectric regions and the flat unpatterned surface of a bulk metallic substrate. The waveguides discussed here are promising to have significant applications in the field of nanophotonics by being able to simultaneously shrink length, time and energy scales, allowing for easy coupling over their entire bandwidth of operation, and exhibiting minimal absorption losses limited only by the intrinsic loss of the metallic substrate. These principles can be used for many frequency regimes (from GHz and lower, all the way to optical).

2007010, May 10, 2007

Nov 7, 2005

11/163993

James Peterson - Boston MA, US
David Chan - Cambridge MA, US
Jeffrey Mancuso - Cambridge MA, US

PIXELPASS LLC - Waltham MA

G06F 15/16

709229000

In a method for managing subscriptions to a web site, a determination is made as to whether an end user accessing a web page at the web site is a current subscriber to the web site. If it is determined that the end user does not have a current subscription, an obscuring layer is placed over the web page that at least partially obscures at least a portion of thereof. The obscuring layer includes a link to a subscription server for purchasing a subscription to the web site. If it is determined that the end user is a current subscriber, the end user is provided with non-obscured access to the web site. In a further method for managing subscriptions to a web site, when an end user accesses a web page at the web site, a remote subscription server is accessed. The end user's computer automatically sends to the remote subscription server an end user identification and a merchant identification. A determination is made as to whether the end user has a current subscription to the web site. If it is determined that the end user does not have a current subscription to the web site, the remote server sends to the end user an obscuring layer that at least partially obscures at least a portion of the web page.