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David Daniel Rankin, Sr. — 15 Patents

UNUnknown: 8 patents #1,262 of 83,584Top 2%
KUKansas State University: 1 patents #177 of 538Top 35%
Yadkinville, NC: #2 of 44 inventorsTop 5%
North Carolina: #3,282 of 45,564 inventorsTop 8%
Overall (All Time): #307,048 of 4,157,543Top 8%
15 Patents All Time
David Daniel Rankin, Sr. has been granted 15 US patents while listed as an inventor at Unknown. The first was granted in 2003 and the most recent in July 2025. David Daniel Rankin, Sr. ranks #307,048 of 4,157,543 US inventors in our database (top 7.4%). Patent records list David Daniel Rankin, Sr. in Yadkinville, NC, US.

Patents per Year

Patents granted per year, 2003 to 2025Bar chart with a peak of 3 patents in 2023.peak 32003: 1 patents20032004: 1 patents20042005: 1 patents20052007: 1 patents20072008: 1 patents20082021: 1 patents20212022: 2 patents20222023: 3 patents20232024: 2 patents20242025: 2 patents2025

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDate
12345509 Non-lethal defensive fluid composition and pressurized delivery system — 2025-07-01
12345508 Non-lethal defensive fluid composition and pressurized delivery system — 2025-07-01
11920906 Non-lethal defensive fluid composition and pressurized delivery system — 2024-03-05
11920907 Non-lethal defensive fluid composition and pressurized delivery system — 2024-03-05
11771662 Analgesic formulation for control of pain in dogs Stanley KuKanich, Katherine KuKanich, Charles W. Locuson 2023-10-03
11662182 Non-lethal defensive fluid composition and pressurized delivery system — 2023-05-30
11650030 Non-lethal defensive fluid composition and pressurized delivery system — 2023-05-16
11453020 Backpack personal defense material dispenser — 2022-09-27
11320245 Non-lethal defensive fluid composition and pressurized delivery system — 2022-05-03
11015376 Security lock for door — 2021-05-25
7469730 Rotatable cutting tool — 2008-12-30
7237586 Rotatable cutting tool — 2007-07-03
6896017 Rotatable cutting tool — 2005-05-24
6716483 Methods for cutting articles containing at least a substantial amount of wood — 2004-04-06
6662694 Rotatable cutting tool with colored visual warning — 2003-12-16

Frequent Collaborators

Stanley KuKanich1 shared
Katherine KuKanich1 shared
Charles W. Locuson1 shared

Nearby-Ranked Inventors

Naoya Kasahara15
Aaron Larry Snyder15
Avishay Meron15
Stuart Hatfield15
Satoshi KUNIYASU15
Ashton Mason15
Theodore Yuchiang Cheng15
Richard Sharbaugh15
Rajen Bhatt15