Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8732011 | System for implementing a performance-based customer referral program | Jeffrey P. Bezos, Sheldon J. Kaphan, Ellen L. Ratajak | 2014-05-20 |
| 8494923 | Internet-based customer referral system | Jeffrey P. Bezos, Sheldon J. Kaphan, Ellen L. Ratajak | 2013-07-23 |
| 7512548 | Use of shopping cart to collect and purchase items selected from multiple web sites | Jeffrey P. Bezos, Sheldon J. Kaphan, Ellen L. Ratajak | 2009-03-31 |
| 7337133 | Internet-based customer referral system | Jeffrey P. Bezos, Sheldon J. Kaphan, Ellen L. Ratajak | 2008-02-26 |
| 6029141 | Internet-based customer referral system | Jeffrey P. Bezos, Sheldon J. Kaphan, Ellen L. Ratajak | 2000-02-22 |