Inventor · disambiguated record
Jean Ledieu
Also filed as: LEDIEU JEAN · LEDIEU JEAN PHILIPPE
8 granted patents·1 pending application·91 citations·filing 1974–2009
86Inventor score
Top patents by PatentIndex Score
9 records- 0175US5671205ACompact disc comprising an antipiracy marking and method of providing compact discs with an antipiracy markingDIGIPRESS SA·Filed 1995·Granted Sep 23, 1997·30 cites·10 claims
- 0271US3974481AMachine for the finding of an optimum passageCYBCO SOC·Filed 1974·Granted Aug 10, 1976·27 cites·25 claims
- 0344US2011025116A1Head-rest guiding sleeve with security unlockingITW DE FRANCE·Filed 2009·Application pending·0 cites
- 0442US5166014AMethod for the manufacture of an optically readable disc, and discs obtained by this methodDIGIPRESS SA·Filed 1990·Granted Nov 24, 1992·10 cites·11 claims
- 0539US6620480B1Pre-engraved substrate for magnetic, magneto-optical, or phase transition optical discO D M E INTERNAT B V·Filed 1998·Granted Sep 16, 2003·7 cites·15 claims
- 0639US5312718AMethod of manufacturing dies for pressing optical disksDIGIPRESS SA·Filed 1993·Granted May 17, 1994·5 cites·7 claims
- 0738US5763002AMethods of manufacture of master disk for making a die for pressing optical disksDIGIPRESS SA·Filed 1996·Granted Jun 9, 1998·8 cites·22 claims
- 0831US5622815AProcess of manufacture of a master disk and/or of an optical diskDIGIPRESS SA·Filed 1995·Granted Apr 22, 1997·4 cites·11 claims
- 0926US5770238AMaster disk for making dies for pressing in particular optical disksDIGIPRESS SA·Filed 1996·Granted Jun 23, 1998·0 cites·17 claims
Join the waitlist — get patent alerts
Get an alert when Jean Ledieu 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 →