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For the Inventor, By the Inventor

Levis, Austria

Franz Chromy

This inventor holds 4 USPTO granted patents. Top assignee: Hilti Aktiengesellschaft. Active years: 1980-1988.

USPTO Granted Patents = 4

% Patents Active = 100.0

Average Co-Inventor Count = 1.1

ph-index = 3

Forward Citations = 44(Granted Patents)


Location History:

  • Levis, AT (1980 - 1986)
  • Feldkirch, AT (1988)

Company Filing History:

goldMedal4 out of 2,271 
 
Hilti Aktiengesellschaft
 patents

Years Active: 1980-1988

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4 patents (USPTO):Explore Patents
1. 4732219 - Hammer drill with pneumatically driven percussion piston (1988-03-22),
2. 4611670 - Motor driven drilling or chipping device (1986-09-16),
3. 4366869 - Hammer drill (1983-01-04),
4. 4222443 - Motor-driven hammer drill (1980-09-16),
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