Patrick E. McDonald — 3 Patents at Hydril

Patrick E. McDonald has been granted 3 US patents while listed as an inventor at Hydril. The first was granted in 1983 and the most recent in April 1988. Patrick E. McDonald ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Patrick E. McDonald in Houston, TX, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
4736967	Tubular pin configuration to prevent galling while ensuring sealing	Keith C. Mott, Gary E. Kirsch, H. Paul Barringer	1988-04-12
4676529	Pipe joint	—	1987-06-30
4373754	Threaded connector	Charles A. Bollfrass, Leonard Landriault	1983-02-15

Patrick E. McDonald — 3 Patents

Issued Patents All Time

Patent Widget