Keith E. Schubert
34Patents
11h-index
25Co-inventors
75Inventor score
Filing activity: Sep 16, 1974 → May 18, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD512777S1 | Inhaler | General | 70 | Expired |
| US3937121A | Double break-off screw | Mechanical Engineering; Lighting; Heating | 49 | Expired |
| US3965815A | Setting mechanism for a postage printing device | Emerging Cross-Sectional Technologies | 24 | Expired |
| US5154668A | Single paper sheet forming a two-sided copy of information entered on both sides thereof | Performing Operations; Transporting | 17 | Expired |
| US5224897A | Self-replicating duplex forms | Performing Operations; Transporting | 14 | Expired |
| US5197922A | Method and apparatus for producing two-sided carbonless copies of both sides of an original document | Performing Operations; Transporting | 14 | Expired |
| US4239088A | Scale with weight-to-period transducer | Physics | 14 | Expired |
| US4631681A | Microprocessor controlled d.c. motor and application therefor | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5393265A | Self-replicating duplex forms | Performing Operations; Transporting | 12 | Expired |
| US5137494A | Two-sided forms and methods of laying out, printing and filling out same | Performing Operations; Transporting | 11 | Expired |
| US5248279A | Two-sided, self-replicating forms | Performing Operations; Transporting | 11 | Expired |
| US5127879A | Apparatus for recordkeeping | Performing Operations; Transporting | 11 | Expired |
| US5395288A | Two-way-write type, single sheet, self-replicating forms | Performing Operations; Transporting | 10 | Expired |
| US4774881A | Rotary operated character selection system for postage meters | Physics | 9 | Expired |
| US4121473A | Simultaneously controlled postage meter conversion apparatus | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4603627A | Rotary shutter device for a postal mailing system | Physics | 8 | Expired |
| US4202489A | Register resetting interface | Physics | 8 | Expired |
| US3977320A | Electrically controlled postage meter | Physics | 7 | Expired |
| US4682541A | Postal mailing system having an adaptable postage meter | Physics | 5 | Expired |
| US5135437A | Form for making two-sided carbonless copies of information entered on both sides of an original sheet and methods of making and using same | Performing Operations; Transporting | 4 | Expired |
| US4286144A | Encoder for postage meter | Physics | 4 | Expired |
| US4074574A | Postage meter conversion apparatus | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4221135A | Postage meter conversion apparatus | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4123950A | Retro-fittable tape trip mechanism | Emerging Cross-Sectional Technologies | 3 | Expired |
| US8801432B2 | Device, system and methods for determining and measuring temporomandibular joint positions and movements | Human Necessities | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.