Inventor · disambiguated record
Marianne Krieg-Kowald
Also filed as: KRIEG-KOWALD MARIANNE
8 granted patents·2 pending applications·160 citations·filing 2000–2010
86Inventor score
Files withFLEXPLAY TECHNOLOGIES INC4SPERIAN EYE & FACE PROT INC2MCW RES FOUND INC1SPECTRADISC CORP1SPERIAN EYE & FACE PROT INC A1
Top patents by PatentIndex Score
10 records- 0197US6780564B2Methods and apparatus for rendering an optically encoded medium unreadable and tamper-resistantFLEXPLAY TECHNOLOGIES INC·Filed 2002·Granted Aug 24, 2004·104 cites·8 claims
- 0292US6531262B1Methods and apparatus for rendering an optically encoded medium unreadable and tamper-resistantSPECTRADISC CORP·Filed 2000·Granted Mar 11, 2003·35 cites·47 claims
- 0378US7630128B2Optical filter panel having a narrow-width selective-wavelength attenuation and high visible light transmissionSPERIAN EYE & FACE PROT INC A·Filed 2007·Granted Dec 8, 2009·13 cites·17 claims
- 0462US7688524B2Laser protective eyewear having improved glare protectionSPERIAN EYE & FACE PROT INC·Filed 2008·Granted Mar 30, 2010·3 cites·13 claims
- 0561US6982109B2Method for rendering surface layer of limited play disk lightfastFLEXPLAY TECHNOLOGIES INC·Filed 2001·Granted Jan 3, 2006·4 cites·12 claims
- 0659US7205002B2Method of making, and the use of cytotoxic agents containing elemental seleniumMCW RES FOUND INC·Filed 2003·Granted Apr 17, 2007·1 cites·17 claims
- 0754US7374804B2Method for rendering surface layer of limited play disk lightfastFLEXPLAY TECHNOLOGIES INC·Filed 2005·Granted May 20, 2008·0 cites·12 claims
- 0846US7957077B2Laser protective eyewear having improved glare protectionSPERIAN EYE & FACE PROT INC·Filed 2010·Granted Jun 7, 2011·0 cites·13 claims
- 0946US2005058800A1Methods and apparatus for rendering an optically encoded medium unreadable and tamper-resistantFLEXPLAY TECHNOLOGIES INC·Filed 2004·Application pending·0 cites
- 1037US2002172143A1Limiting shelf life for limited play optical information storage mediaFiled 2001·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Marianne Krieg-Kowald files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →