| search engines to find patents | 0.13 | 0.9 | 1096 | 30 | 39 |
| free online patents search engine | 0.84 | 0.4 | 4456 | 33 | 64 |
| free us patent search engine | 1.61 | 0.5 | 7435 | 28 | 41 |
| google patents search engine | 1.39 | 0.5 | 681 | 28 | 55 |
| patent product search engine | 1.62 | 0.1 | 6116 | 28 | 20 |
| united states patent search engine | 0.9 | 1 | 3670 | 34 | 78 |
| search patents by company | 0.5 | 0.3 | 1109 | 25 | 49 |
| uk patent search engine | 0.9 | 0.4 | 9622 | 23 | 88 |
| european patent search engine | 1.65 | 0.6 | 9852 | 29 | 52 |
| site for patent search | 1 | 0.9 | 1087 | 22 | 36 |
| patent google search engine | 0.07 | 0.1 | 8630 | 27 | 6 |
| search for a patent | 0.35 | 1 | 2691 | 19 | 36 |
| patent searches free online | 1.33 | 0.9 | 8262 | 27 | 100 |
| patent searching free website | 1.77 | 1 | 8794 | 29 | 63 |
