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USPTO Patent Rankings Data through Dec 31, 2025
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Derek Robert Watkins — 5 Patents

UNUnknown: 1 patents #29,356 of 83,584Top 40%
Maitland, AU: #9 of 71 inventorsTop 15%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Derek Robert Watkins has been granted 5 US patents while listed as an inventor at Unknown. The first was granted in 2012 and the most recent in December 2017. Derek Robert Watkins ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Derek Robert Watkins in Maitland, AU.

Patents per Year

Patents granted per year, 2012 to 2017Bar chart with a peak of 2 patents in 2015.peak 22012: 1 patents20122015: 2 patents20152016: 1 patents20162017: 1 patents2017

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
9835098 System and method of injecting natural gas in liquid form into a diesel engine Keith Murray Rumbel 2017-12-05
9249745 Diesel fuel engine injection system and method therefor Bruce Robert Watkins, Keith Murray Rumbel 2016-02-02
9057344 System and method of injecting combustible gas in liquid form into a diesel engine Keith Murray Rumbel 2015-06-16
8991362 Diesel fuel engine injection system and method therefor Bruce Robert Watkins, Keith Murray Rumbel 2015-03-31
8214128 Diesel fuel engine injection system and method therefor Bruce Robert Watkins, Keith Murray Rumbel 2012-07-03

Frequent Collaborators

Keith Murray Rumbel5 shared
Bruce Robert Watkins3 shared

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Mohankumar Krishnan VALIYAMBATH5
Baoquan Tan5
Jack Long5