GRANT TFW INC has a total of 26 patent applications. Its first patent ever was published in 1989. It filed its patents most often in United States, Canada and Norway. Its main competitors in its focus markets civil engineering, machine tools and mechanical elements are GOLD STAR MFG INC, HUNTING OILFIELD SERVICES INC and RUSSELL LARRY RAYNER.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 6 | |
#2 | Canada | 5 | |
#3 | Norway | 5 | |
#4 | Australia | 4 | |
#5 | WIPO (World Intellectual Property Organization) | 4 | |
#6 | EPO (European Patent Office) | 2 |
# | Industry | |
---|---|---|
#1 | Civil engineering | |
#2 | Machine tools | |
#3 | Mechanical elements | |
#4 | Machines | |
#5 | Surface technology and coating |
# | Technology | |
---|---|---|
#1 | Earth drilling | |
#2 | Pipes | |
#3 | Unspecified technologies | |
#4 | Turning | |
#5 | Coating metallic material | |
#6 | Soldering, welding and flame cutting | |
#7 | Making forged metal products | |
#8 | Forging |
# | Name | Total Patents |
---|---|---|
#1 | Carlin Frank J | 13 |
#2 | Smith Jackie E | 11 |
#3 | Hayes Clarence J | 6 |
#4 | Fite Terry L | 6 |
#5 | Read Shannon R | 1 |
#6 | Tai Wen-Tong | 1 |
#7 | Price John F | 1 |
Publication | Filing date | Title |
---|---|---|
US5492375A | Drill pipe with improved connectors | |
US5562312A | Discountinuous plane weld apparatus and method for enhancing fatigue and load properties of subterranean well drill pipe immediate the area of securement of pipe sections | |
US5361846A | Apparatus and method for enhancing fatigue properties of subterranean well drill pipe immediate the area of securement to a tool joint | |
US5433130A | Shoulder dressing apparatus | |
US5355968A | Tool joint stress relief groove | |
US5147996A | Tool joint | |
CA2023297C | Tool joint and method of hardfacing same |