{"@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.patentleaderboard.com/"}, {"@type": "ListItem", "position": 2, "name": "2018", "item": "https://www.patentleaderboard.com/2018/"}, {"@type": "ListItem", "position": 3, "name": "Progress Rail Services", "item": "https://www.patentleaderboard.com/2018/company/progress-rail-services"}, {"@type": "ListItem", "position": 4, "name": "Edward Constantine", "item": "https://www.patentleaderboard.com/2018/inventor/fl:ed_ln:constantine-1"}]}
Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
EC

Edward Constantine — 1 Patent in 2018

PSProgress Rail Services: 1 patents #6 of 12Top 50%
Kansas City, MO: #36 of 152 inventorsTop 25%
Missouri: #597 of 2,351 inventorsTop 30%
Overall (2018): #430,271 of 503,207Top 90%
1 Patents 2018

Issued Patents 2018

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10081915 Track rail fastening mechanism and method 2018-09-25