Issued Patents All Time
Showing 1–25 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9992980 | Small animal rearing container | Hikaru Nakagawa | 2018-06-12 |
| D762013 | Container for breeding small animals | Hikaru Nakagawa | 2016-07-19 |
| D752297 | Container for breeding small animals | Hikaru Nakagawa | 2016-03-22 |
| 8453605 | System for feeding aquatic organisms and cleaning unit for water tank | Ryuzo Arita | 2013-06-04 |
| 8132533 | Overflow device for water tank | Ryuzo Arita | 2012-03-13 |
| 8132534 | Overflow device for water tank | Ryuzo Arita | 2012-03-13 |
| 7918995 | Filter device for water tank | Ryuzo Arita | 2011-04-05 |
| 7299767 | Housing for small pet animals | Robert C. Krause, Hikaru Nakagawa, Kozo Sakai, Keqian You | 2007-11-27 |
| 6684817 | Breeding nest-forming structure and breeding housing using the same for small pet animals | — | 2004-02-03 |
| D458418 | Top of a cage for small pets | Robert C. Krause, Yuzo Migita | 2002-06-04 |
| 6164932 | Aquarium pump for use both as an air pump and a water pump and aquarium apparatus with a passage aquarium | Yoji Takano | 2000-12-26 |
| 6067939 | Housing for a small pet animal such as a rodent or the like | — | 2000-05-30 |
| 6062171 | Excretion housing for small pet animals and housing system with such excretion housing | — | 2000-05-16 |
| 6044799 | Lip member for an opening of a housing for a small pet animal such as a rodent and housing system | — | 2000-04-04 |
| 6032614 | Housing for a small animal | — | 2000-03-07 |
| 5855187 | Breeding housing for a small pet animal such as a rodent or the like | — | 1999-01-05 |
| 5722347 | Floating island for aquarium | Robert C. Krause | 1998-03-03 |
| 5392733 | Box-shaped toilet for pet animals | — | 1995-02-28 |
| D351488 | Aquarium | — | 1994-10-11 |
| D347911 | Aquarium | — | 1994-06-14 |
| 5266190 | Filter apparatus for use with a water tank | — | 1993-11-30 |
| D334970 | Filter medium for an aquarium | — | 1993-04-20 |
| D334971 | Filter medium for an aquarium | — | 1993-04-20 |
| 5144908 | Cell-forming assembly for a household aquarium | — | 1992-09-08 |
| 5144909 | Cell-forming assembly for a household aquarium | — | 1992-09-08 |