IP Library › Granted Patent US 811,580
Granted Patent S1
US 811,580 · App. 29/508,396 · Granted Feb 27, 2018

Unidirectional valve for face mask

Inventors: Ee Ho Tang (Singapore, SG); Kwok Jiang Sak (Singapore, SG); Wei Liang Jerome Lee (Singapore, SG)
Assignee: INNOSPARKS PTE LTD
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Quick Facts
Patent No.
US 811,580
App. No.
29/508,396
Granted
Feb 27, 2018
Kind
S1
Claims (1)

We claim the ornamental design for a unidirectional valve for face mask, as shown and described.

Assignments (5)
CORRECTIVE ASSIGNMENT TO CORRECT THE TYPOGRAPHICAL ERROR IN THE RECEIVING PARTY DATA PREVIOUSLY RECORDED AT REEL: 052579 FRAME: 0120. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded May 15, 2020
From: INNOSPARKS PTE. LTD.
To: ST ENGINEERING INNOSPARKS PTE. LTD.
Reel/Frame 052677/0728 →
CORRECTIVE ASSIGNMENT TO CORRECT THE CORRECT ASSIGNEE DATA PREVIOUSLY RECORDED AT REEL: 052579 FRAME: 0120. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded May 7, 2020
From: INNOSPARKS PTE. LTD.
To: ST ENGINEERING INNOSPARKS PTE. LTD.
Reel/Frame 052649/0175 →
CHANGE OF NAME Recorded May 5, 2020
From: INNOSPARKS PTE. LTD.
To: ST ENGINEERING PTE. LTD.
Reel/Frame 052579/0120 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 13, 2015
From: SINGAPORE TECHNOLOGIES DYNAMICS PTE LTD
To: INNOSPARKS PTE LTD
Reel/Frame 036101/0778 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 11, 2014
From: TANG, EE HO; SAK, KWOK JIANG; LEE, WEI LIANG JEROME
To: SINGAPORE TECHNOLOGIES DYNAMICS PTE LTD
Reel/Frame 034475/0601 →
Priority Claims (1)
SG D2014/574/G · May 8, 2014 · national