Inventor · disambiguated record
Sigrid Maria Roman Gelderland
Also filed as: GELDERLAND SIGRID MARIA ROMAN
3 granted patents·1 pending application·16 citations·filing 2001–2011
59Inventor score
Top patents by PatentIndex Score
4 records- 0175US6739255B2Stamp, method, and apparatusKONINKL PHILIPS ELECTRONICS NV·Filed 2001·Granted May 25, 2004·16 cites·9 claims
- 0255US7952285B2Metal halide lamp with cerium oxide sealKONINKL PHILIPS ELECTRONICS NV·Filed 2007·Granted May 31, 2011·0 cites·18 claims
- 0342US8274224B2Metal halide lamp including ceramic sealing materialGELDERLAND SIGRID MARIA ROMAN·Filed 2011·Granted Sep 25, 2012·0 cites·6 claims
- 0437US2009072743A1Electric discharge lampKONINKL PHILIPS ELECTRONICS NV·Filed 2005·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →