Delaware ranks #39 among US states for total patents filed in 2020, with 1,126 patents from 653 inventors across 28 cities. On a per-capita basis that is 1.1 patents per 1,000 residents, a standard benchmark for comparing state-level R&D intensity.
Top Cities in Delaware 2020
| Rank | City | Patents | Inventors |
|---|---|---|---|
| #1 | Wilmington, DE | 421 | 253 |
| #2 | Newark, DE | 199 | 141 |
| #3 | Hockessin, DE | 108 | 56 |
| #4 | Middletown, DE | 84 | 31 |
| #5 | Nonatum Mills, DE | 83 | 41 |
| #6 | Bear, DE | 55 | 35 |
| #7 | Claymont, DE | 46 | 9 |
| #8 | Dover, DE | 31 | 23 |
| #9 | New Castle, DE | 19 | 16 |
| #10 | Lewes, DE | 16 | 8 |
| #11 | Milford, DE | 12 | 3 |
| #12 | Clayton, DE | 8 | 3 |
| #13 | Townsend, DE | 7 | 2 |
| #14 | Seaford, DE | 5 | 5 |
| #15 | Milton, DE | 4 | 4 |
| #16 | Bethany Beach, DE | 4 | 4 |
| #17 | Smyrna, DE | 4 | 3 |
| #18 | Millsboro, DE | 3 | 2 |
| #19 | Newport, DE | 3 | 2 |
| #20 | Marydel, DE | 2 | 1 |
| #21 | Knowles Crossroads, DE | 2 | 2 |
| #22 | Centreville, DE | 2 | 1 |
| #23 | Arden, DE | 2 | 2 |
| #24 | Frederica, DE | 2 | 2 |
| #25 | Yorklyn, DE | 1 | 1 |