DR

Derek A. Roberts

Rolls-Royce Plc: 10 patents #806 of 2,886Top 30%
BT British American Tobacco: 1 patents #175 of 318Top 60%
Overall (All Time): #462,808 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9516895 Additive release component Edward Awty, Charanjit Nandra, Alfred Vincent Spencer, Paul Frobisher, Michael Newnham +2 more 2016-12-13
5107675 Gas turbine engine 1992-04-28
4858815 Friction welder mechanism John Daines 1989-08-22
4756153 Load transfer structure Ronald Catlow 1988-07-12
4503667 Turbine overspeed limiter for turbomachines 1985-03-12
4452567 Rotor drive systems John M. Treby 1984-06-05
4425079 Air sealing for turbomachines Trevor H. Speak, John D. Kernon 1984-01-10
4395247 Shaft coupling 1983-07-26
4375906 System for supporting a rotor in a conditions of accidental dynamic imbalance John M. Treby 1983-03-08
4306755 Gas turbine rotor support systems 1981-12-22
4224011 Cooled rotor blade for a gas turbine engine Alec G Dodd, Anthony G. Gale 1980-09-23