Inventor · disambiguated record
Yoriyuki Takashima
Also filed as: TAKASHIMA YORIYUKI
27 granted patents·9 pending applications·525 citations·filing 1996–2022
97Inventor score
Files withIDEMITSU KOSAN CO23NISHIMURA KAZUKI5TAKASHIMA YORIYUKI4IWAKUMA TOSHIHIRO2KAWAMURA MASAHIRO2
Top patents by PatentIndex Score
36 records- 0199US8025815B2Naphthalene derivative, material for organic electroluminescence device, and organic electroluminescence device using the sameIDEMITSU KOSAN CO·Filed 2008·Granted Sep 27, 2011·46 cites·15 claims
- 0298US8221907B2Chrysene derivative and organic electroluminescent device using the sameKAWAMURA MASAHIRO·Filed 2008·Granted Jul 17, 2012·42 cites·13 claims
- 0398US8034256B2Naphthalene derivative, material for organic electroluminescence device, and organic electroluminescence device using the sameIDEMITSU KOSAN CO·Filed 2008·Granted Oct 11, 2011·35 cites·19 claims
- 0498US8029697B2Naphthalene derivative, material for organic electroluminescence device, and organic electroluminescence device using the sameIDEMITSU KOSAN CO·Filed 2008·Granted Oct 4, 2011·32 cites·17 claims
- 0597US8587192B2Organic electroluminescence device and material for organic electroluminescence deviceNISHIMURA KAZUKI·Filed 2011·Granted Nov 19, 2013·38 cites·12 claims
- 0696US8568903B2Phenanthrene derivative, and material for organic EL elementKAWAMURA MASAHIRO·Filed 2008·Granted Oct 29, 2013·36 cites·17 claims
- 0796US8330350B2Organic electroluminescence device and material for organic electroluminescence deviceNISHIMURA KAZUKI·Filed 2008·Granted Dec 11, 2012·49 cites·15 claims
- 0896US8154195B2Organic electroluminescence device and material for organic electroluminescence deviceNISHIMURA KAZUKI·Filed 2008·Granted Apr 10, 2012·48 cites·6 claims
- 0996US8021574B2Naphthalene derivative, material for organic electroluminescence device, and organic electroluminescence device using the sameIDEMITSU KOSAN CO·Filed 2008·Granted Sep 20, 2011·38 cites·15 claims
- 1095US8779655B2Organic electroluminescence device and material for organic electroluminescence deviceNISHIMURA KAZUKI·Filed 2008·Granted Jul 15, 2014·47 cites·18 claims
- 1195US8211552B2Organic electroluminescence deviceNISHIMURA KAZUKI·Filed 2008·Granted Jul 3, 2012·44 cites·12 claims
- 1293US8039129B2Organic electroluminescence device and material for organic electroluminescence deviceIDEMITSU KOSAN CO·Filed 2010·Granted Oct 18, 2011·8 cites·20 claims
- 1391US8940412B2Material for organic electroluminescent element, and organic electroluminescent elementTAKASHIMA YORIYUKI·Filed 2009·Granted Jan 27, 2015·15 cites·12 claims
- 1485US8022253B2Aromatic amine derivative and organic electroluminescence device using the sameIDEMITSU KOSAN CO·Filed 2007·Granted Sep 20, 2011·8 cites·15 claims
- 1583US11390825B2Dispersing agent for lubricating oil, method for producing same, and lubricating oil compositionIDEMITSU KOSAN CO·Filed 2019·Granted Jul 19, 2022·1 cites·9 claims
- 1682US9214636B2Organic electroluminescence deviceTAKASHIMA YORIYUKI·Filed 2007·Granted Dec 15, 2015·9 cites·10 claims
- 1782US9120748B2Fluoranthene compound, organic electroluminescence device using the same, and solution containing organic electroluminescence materialTAKASHIMA YORIYUKI·Filed 2007·Granted Sep 1, 2015·4 cites·7 claims
- 1881US8039127B2Organic electroluminescence device and material for organic electroluminescence deviceIDEMITSU KOSAN CO·Filed 2009·Granted Oct 18, 2011·6 cites·16 claims
- 1981US7838130B2Aminodibenzofluorene derivative and organic electroluminescence device using the sameIDEMITSU KOSAN CO·Filed 2007·Granted Nov 23, 2010·7 cites·16 claims
- 2067US8367869B2Aromatic amine derivative and organic electroluminescence device using the sameIDEMITSU KOSAN CO·Filed 2011·Granted Feb 5, 2013·1 cites·13 claims
- 2162US7851073B2Organic electroluminescence device and material for organic electroluminescence deviceIDEMITSU KOSAN CO·Filed 2007·Granted Dec 14, 2010·1 cites·10 claims
- 2257US2024124638A1Polymer composition, lubricating oil additive composition, and lubricating oil compositionIDEMITSU KOSAN CO·Filed 2022·Application pending·0 cites
- 2356US2013221333A1Organic electroluminescence deviceIDEMITSU KOSAN CO·Filed 2013·Application pending·0 cites
- 2453US11905486B2Viscosity index improver composition and lubricating oil compositionIDEMITSU KOSAN CO·Filed 2020·Granted Feb 20, 2024·0 cites·8 claims
- 2553US5849926APyrazole derivatives and herbicides containing the sameIDEMITSU KOSAN CO·Filed 1998·Granted Dec 15, 1998·4 cites·11 claims
- 2653US2015322371A1Lubricant oil compositionIDEMITSU KOSAN CO·Filed 2013·Application pending·0 cites
- 2752US9126887B2Organic electroluminescent element material and organic electroluminescent element comprising sameIWAKUMA TOSHIHIRO·Filed 2009·Granted Sep 8, 2015·0 cites·27 claims
- 2852US2010039027A1Organic electroluminescence deviceIDEMITSU KOSAN CO·Filed 2008·Application pending·0 cites
- 2951US9790450B2Lubricating oil composition for engine made of aluminum alloy and lubrication methodIDEMITSU KOSAN CO·Filed 2013·Granted Oct 17, 2017·0 cites·10 claims
- 3051US2012007059A1Organic electroluminescence element and compoundIWAKUMA TOSHIHIRO·Filed 2009·Application pending·0 cites
- 3149US5863866APyrazole derivativesIDEMITSU KOSAN CO·Filed 1996·Granted Jan 26, 1999·5 cites·24 claims
- 3249US2009045731A1Organic electroluminescence device and material for organic electroluminescence deviceIDEMITSU KOSAN CO·Filed 2008·Application pending·0 cites
- 3348US2008226940A1Dibenzo[c,g]triphenylene derivative and organic electroluminescence device using the sameIDEMITSU KOSAN CO·Filed 2008·Application pending·0 cites
- 3439US2008146759A1Sulfur-Containing Compound, Method for Producing Same, Sulfur-Containing Polymer, and Optical MaterialTAKASHIMA YORIYUKI·Filed 2005·Application pending·0 cites
- 3537US6037312AIsoxazole derivativesIDEMITSU KOSAN CO·Filed 1997·Granted Mar 14, 2000·1 cites·20 claims
- 3636US2018044609A1Lubricating oil composition for internal-combustion engine, and method for reducing friction in gasoline engineIDEMITSU KOSAN CO·Filed 2016·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Yoriyuki Takashima 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 →