IP Library › Granted Patent US 12,329,124
Granted Patent B2
US 12,329,124 · App. 17/979,373 · Granted Jun 17, 2025

Animal toilet

Inventors: Ayano Okawa (Kanonji, JP); Yasuhiro Sasano (Kanonji, JP); Misato Nakatani (Kanonji, JP)
Assignee: UNICHARM CORPORATION
A01K1/011
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Quick Facts
Patent No.
US 12,329,124
App. No.
17/979,373
Granted
Jun 17, 2025
Kind
B2
Abstract

An animal litter box includes an upper container, a tray, a lower container, and a ventilation fan. The upper container includes a liquid passage portion having holes through which urine passes downward. An absorbent body is disposed on the tray to absorb the urine that passes through the liquid passage portion. The lower container supports the upper container from below and detachably accommodates the tray. The ventilation fan is disposed in the lower container and sends internal air in the lower container to an outside.

Claims (26)

1. An animal litter box comprising:

an upper container comprising a liquid passage portion having holes through which urine passes downward;

a tray on which an absorbent body is disposed to absorb the urine that passes through the liquid passage portion;

a lower container that supports the upper container from below and that detachably accommodates the tray; and

a ventilation fan disposed in the lower container and that sends internal air in the lower container outside, wherein

the lower container has an inclined back wall inclined obliquely with respect to a vertical direction of the animal litter box, and

the ventilation fan is disposed in the inclined back wall in parallel with the vertical direction.

2. The animal litter box according to claim 1 , wherein at least a part of the ventilation fan is disposed below a lower surface of the liquid passage portion.

3. The animal litter box according to claim 1 , wherein

the ventilation fan rotates around a rotation shaft, and

the rotation shaft is disposed below a lower surface of the liquid passage portion.

4. The animal litter box according to claim 1 , wherein

an attach/detach opening portion is disposed on a front surface of the lower container to attach and detach the tray, and

in a state where the lower container accommodates the tray, a gap is formed between the tray and an edge of the attach/detach opening portion.

5. The animal litter box according to claim 1 , wherein

an opening portion is disposed in a bottom portion of the lower container, and

an uneven portion is disposed on a lower surface of the bottom portion.

6. The animal litter box according to claim 1 further comprising:

a deodorization filter including a deodorant and disposed on an inner side or an outer side with respect to the ventilation fan.

7. The animal litter box according to claim 6 further comprising:

a litter-preventing filter that is:

disposed on an inner side with respect to the deodorization filter and the ventilation fan, and

coarser than the deodorization filter.

8. The animal litter box according to claim 6 further comprising:

a water-repellent filter disposed on an inner side with respect to the deodorization filter and the ventilation fan.

9. The animal litter box according to claim 1 , wherein the ventilation fan is detachably disposed in the lower container.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 16, 2022
From: OKAWA, AYANO; SASANO, YASUHIRO; NAKATANI, MISATO
To: UNICHARM CORPORATION
Reel/Frame 061788/0235 →
Priority Claims (1)
JP 2020-097403 · Jun 4, 2020 · national
Continuity (2)
Continuation PCTJP2021018953 · May 19, 2021
Related Publication 20230051699A1 · Feb 16, 2023
References Cited (52)
US 5044325A · Miksitz · 1991 [cited by applicant]
US 5140948A · Roberts · 1992 [cited by examiner]
US 5315964A · Mimms · 1994 [cited by examiner]
US 5511513A · Baron et al. · 1996 [cited by applicant]
US 5564364A · Kovacs · 1996 [cited by examiner]
US 5738040A · Simmons · 1998 [cited by examiner]
US 5778822A · Giffin · 1998 [cited by examiner]
US 5988108A · Silver · 1999 [cited by examiner]
US 6341579B1 · Alkire · 2002 [cited by examiner]
US 9565830B1 · Caico · 2017 [cited by examiner]
US 9750225B1 · Makins · 2017 [cited by examiner]
US 20020069830A1 · Clemmons · 2002 [cited by examiner]
US 20020127966A1 · Rich · 2002 [cited by examiner]
US 20040261727A1 · Matsuo · 2004 [cited by examiner]
US 20060156993A1 · Wright · 2006 [cited by examiner]
US 20060201437A1 · Ryan · 2006 [cited by examiner]
US 20070215057A1 · Geer · 2007 [cited by examiner]
US 20070289542A1 · Wright · 2007 [cited by examiner]
US 20090000558A1 · Matsuo · 2009 [cited by examiner]
US 20100132624A1 · Ferrer · 2010 [cited by examiner]
US 20120204800A1 · Beaudoin · 2012 [cited by examiner]
US 20130247830A1 · Bell · 2013 [cited by examiner]
US 20170347618A1 · Spadola · 2017 [cited by examiner]
US 20200060221A1 · Fan · 2020 [cited by examiner]
US 20230380377A1 · Chambers · 2023 [cited by examiner]
US 20230404023A1 · Kirkpatrick · 2023 [cited by examiner]
CN 103180887A · 2013 [cited by applicant]
CN 107249314A · 2017 [cited by applicant]
CN 206866300U · 2018 [cited by applicant]
EP 1062868A1 · 2000 [cited by examiner]
JP H01105450U · 1989 [cited by applicant]
JP H05022063Y2 · 1993 [cited by applicant]
JP H06075151U · 1994 [cited by applicant]
JP 2605781Y2 · 2000 [cited by applicant]
JP 2006296288A · 2006 [cited by applicant]
JP 2009011181A · 2009 [cited by applicant]
JP 2014166174A · 2014 [cited by applicant]
JP 2020068724A · 2020 [cited by applicant]
KR 20020012085A · 2002 [cited by applicant]
WO WO9414315A1 · 1994 [cited by examiner]
WO WO2018159995A1 · 2018 [cited by examiner]
WO 2020076268A2 · 2020 [cited by applicant]
WO 2020090065A1 · 2020 [cited by applicant]
Merged translation of EP_1062868 (Year: 2000). [cited by examiner]
Merged translation of WO_2018159995 (Year: 2018). [cited by examiner]
International Search Report issued in corresponding International Application No. PCT/JP2021/018953, mailed Aug. 10, 2021, with translation (7 pages). [cited by applicant]
International Preliminary Report on Patentability issued in corresponding International Application No. PCT/JP2021/018953, mailed Dec. 6, 2022 (5 pages). [cited by applicant]
Notice of Reasons for Refusal issued in Japanese Application No. 2020-097403 mailed Jan. 24, 2023 (9 pages). [cited by applicant]
Extended European Search Report issued in corresponding European Patent Application No. 21818706.0, dated Jul. 18, 2023, 41 pages. [cited by applicant]
Office Action issued in corresponding Chinese Patent Application No. 202180039484.9, dated Jan. 22, 2025, with translation (23 pages). [cited by applicant]
Office Action issued in corresponding Chinese Patent Application No. 202180039484.9, dated Sep. 25, 2024, with translation (15 pages). [cited by applicant]
Final Office Action issued in corresponding Chinese Patent Application No. 202180039484.9, mailed Mar. 28, 2025 (10 pages). [cited by applicant]