Inventor · disambiguated record
Ellen L. Ratajak
Also filed as: RATAJAK ELLEN L
5 granted patents·1 pending application·3,512 citations·filing 1997–2014
87Inventor score
Top patents by PatentIndex Score
6 records- 0197US6029141AInternet-based customer referral systemAMAZON COM INC·Filed 1997·Granted Feb 22, 2000·3.2k cites·42 claims
- 0295US7337133B1Internet-based customer referral systemAMAZON COM INC·Filed 1999·Granted Feb 26, 2008·220 cites·25 claims
- 0389US7512548B1Use of shopping cart to collect and purchase items selected from multiple web sitesAMAZON COM INC·Filed 1999·Granted Mar 31, 2009·84 cites·15 claims
- 0480US8732011B2System for implementing a performance-based customer referral programBEZOS JEFFREY P·Filed 2011·Granted May 20, 2014·2 cites·24 claims
- 0580US8494923B2Internet-based customer referral systemBEZOS JEFFREY P·Filed 2007·Granted Jul 23, 2013·5 cites·21 claims
- 0669US2014172527A1System for implementing a network-based user referral programAMAZON COM INC·Filed 2014·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →