Inventor · disambiguated record
Per Billgren
Also filed as: BILLGREN PER · BILLGREN PER A
5 granted patents·96 citations·filing 1979–2000
82Inventor score
Files withDAMASTEEL AKTIEBOLAG1ERASTEEL KLOSTER AB1KLOSTER SPEEDSTEEL AB1SOEDERFORS POWDER AB1UDDEHOLMS AB1
Top patents by PatentIndex Score
5 records- 0173US6564689B1Blank for gun barrel, method for producing said gun barrel and gun barrelDAMASTEEL AKTIEBOLAG·Filed 2000·Granted May 20, 2003·21 cites·7 claims
- 0262US5815790AMethod relating to the manufacturing of a composite metal productSOEDERFORS POWDER AB·Filed 1995·Granted Sep 29, 1998·36 cites·20 claims
- 0357US4748088ATool die blank and manufacturing method thereofKLOSTER SPEEDSTEEL AB·Filed 1985·Granted May 31, 1988·18 cites·16 claims
- 0455US5540882AMethod relating to powder metallurgical manufacturing of a bodyERASTEEL KLOSTER AB·Filed 1993·Granted Jul 30, 1996·18 cites·9 claims
- 0531US4265700AMethod of separating a solid and a liquid phase of a massUDDEHOLMS AB·Filed 1979·Granted May 5, 1981·3 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →