Federal-Hoffman Inc.
35Patents
0Active
35Granted
39Portfolio score
Filing activity: Nov 1, 1988 → Jun 30, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5453027A | Washer for establishing electrical continuity between conductive components having non-conductive coatings | Emerging Cross-Sectional Technologies | 180 | Expired |
| US5679920A | Non-toxic frangible bullet | Mechanical Engineering; Lighting; Heating | 140 | Expired |
| US5634357A | Enclosure handle | Emerging Cross-Sectional Technologies | 110 | Expired |
| US5664448A | Locking door handle | Emerging Cross-Sectional Technologies | 104 | Expired |
| US5380083A | Multifaceted modular enclosure frame with integral sub-panel guide system | Electricity | 80 | Expired |
| US5704100A | Retaining clip system | Emerging Cross-Sectional Technologies | 70 | Expired |
| US5172944A | Multiple point cam-pinion door latch | Emerging Cross-Sectional Technologies | 64 | Expired |
| US5292189A | Sub-panel guide system for electrical enclosure | Electricity | 57 | Expired |
| USD360345S | Combined handle and lock unit | General | 53 | Expired |
| US5630632A | Quarter turn latch | Emerging Cross-Sectional Technologies | 50 | Expired |
| US5642909A | Latch system | Emerging Cross-Sectional Technologies | 49 | Expired |
| US5509703A | Enclosure latch | Emerging Cross-Sectional Technologies | 45 | Expired |
| US5582042A | Safety double lock | Emerging Cross-Sectional Technologies | 44 | Expired |
| US5722121A | Enclosure hinge | Fixed Constructions | 39 | Expired |
| US5666695A | Hinge system | Fixed Constructions | 38 | Expired |
| US5388903A | Multifaceted modular enclosure frame with integral sub-panel guide system | Electricity | 36 | Expired |
| USD391143S | Low profile handle | General | 35 | Expired |
| USD343347S | Low-profile enclosure handle | General | 35 | Expired |
| US5259091A | Hinge system for electrical enclosures | Fixed Constructions | 32 | Expired |
| US5852255A | Non-toxic frangible bullet core | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US5683005A | Adjustable mounting system | Electricity | 29 | Expired |
| US5610367A | Non-toxic rim-fire primer | Chemistry; Metallurgy | 29 | Expired |
| US5481889A | Mechanical latch system | Emerging Cross-Sectional Technologies | 28 | Expired |
| USD371300S | Safety double lock | General | 28 | Expired |
| USD385768S | Handle | General | 27 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.