Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Chemical modification of polydiacetylene crystals

Chemical modification of polydiacetylene crystals

US Patent 4681920 · Granted Jul 21, 1987

Estimated economic value: $18,022,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Derived presence-aware service from associated entities2014
Automated conversation recording device and service2012
Graphical user interface and method for customer centric network management2011
Automated conversation recording device and service2009
Call management service2007
System and method for billing calls over a wireless network2006
Graphical user interface and method for customer centric network management2006
Polydiacetylenes exhibiting extended wavelength absorption maxima1999
Method of fabricating highly lattice mismatched quantum well structures1994
Bandgap tuning of semiconductor quantum well structures1993
Semiconductor laser and method of fabricating same1992
M-I-M' device and fabrication method1992