Johnson Level & Tool Mfg. Co., Inc.
85Patents
40Active
85Granted
46Portfolio score
Filing activity: Jun 20, 1983 → Jul 21, 2022 · 16 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5148108A | Stud finder with level indicator | Physics | 54 | Expired |
| US5372250A | Level and case package | Performing Operations; Transporting | 51 | Expired |
| US5205111A | Packaging method for a level and case | Performing Operations; Transporting | 48 | Expired |
| US5027951A | Apparatus and method for packaging of articles | Performing Operations; Transporting | 47 | Expired |
| US5207004A | Post level | Physics | 40 | Expired |
| USD364104S | Extrusion for a box beam level | General | 39 | Expired |
| USD469370S1 | Torpedo level | General | 39 | Expired |
| USD521399S1 | Level | General | 30 | Expired |
| USD555523S1 | Level | General | 27 | Expired |
| US5683055A | Quick rewind chalk line reel | Performing Operations; Transporting | 27 | Expired |
| USD634221S1 | Level | General | 25 | Expired |
| US6026581A | Pocket level with optional magnet | Emerging Cross-Sectional Technologies | 25 | Expired |
| USD582302S1 | Level | General | 22 | Expired |
| US5138759A | Cutting guide and method of making | Emerging Cross-Sectional Technologies | 22 | Expired |
| USD493737S1 | Plumb vial viewing feature for a level | General | 22 | Expired |
| US7024781B1 | Vial illumination feature for a tool such as a level | Physics | 21 | Expired |
| USD633400S1 | Level | General | 21 | Expired |
| US5105549A | Level with top-reading magnification | Physics | 20 | Expired |
| USD777589S1 | Torpedo level | General | 17 | Active |
| US6243957A | Insert molding of a liquid-containing member, such as a level vial, and an article of manufacture formed thereby | Physics | 17 | Expired |
| US5119936A | Structure and method for protectively encasing a level | Physics | 17 | Expired |
| US5659967A | Line level | Physics | 17 | Expired |
| US7770298B1 | Securement arrangement for a level end cap | Physics | 17 | Active |
| US7509749B1 | Wave configuration for the web of a level frame | Physics | 15 | Active |
| US5470029A | Quick rewind chalk line reel | Performing Operations; Transporting | 15 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.