Connecticut ranks #19 among US states for total patents filed in 2022, with 7,524 patents from 3,820 inventors across 215 cities. On a per-capita basis that is 2.1 patents per 1,000 residents, a standard benchmark for comparing state-level R&D intensity.
Top Cities in Connecticut 2022
| Rank | City | Patents | Inventors |
|---|---|---|---|
| #1 | Town of West Hartford, CT | 313 | 142 |
| #2 | Glastonbury, CT | 308 | 123 |
| #3 | New Haven, CT | 238 | 149 |
| #4 | Stamford, CT | 200 | 143 |
| #5 | Guilford, CT | 183 | 70 |
| #6 | South Windsor, CT | 140 | 62 |
| #7 | Middletown, CT | 137 | 62 |
| #8 | Southbury, CT | 130 | 30 |
| #9 | Madison, CT | 129 | 62 |
| #10 | Hamden, CT | 129 | 68 |
| #11 | Danbury, CT | 127 | 83 |
| #12 | Norwalk, CT | 125 | 50 |
| #13 | Manchester, CT | 120 | 73 |
| #14 | Westport, CT | 117 | 63 |
| #15 | Cheshire, CT | 114 | 60 |
| #16 | Southington, CT | 110 | 31 |
| #17 | Fairfield, CT | 108 | 53 |
| #18 | Tolland, CT | 105 | 41 |
| #19 | Vernon, CT | 105 | 57 |
| #20 | Ridgefield, CT | 103 | 60 |
| #21 | Windsor, CT | 101 | 39 |
| #22 | Wallingford, CT | 99 | 35 |
| #23 | Avon, CT | 97 | 54 |
| #24 | Farmington, CT | 96 | 54 |
| #25 | Trumbull, CT | 95 | 47 |