Growing community of inventors

Dunedin, New Zealand

Christopher John Robertson

Average Co-Inventor Count = 2.67

ph-index = 4

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 503

Christopher John RobertsonLewis George Gradon (3 patents)Christopher John RobertsonNicholas Charles Alan Smith (3 patents)Christopher John RobertsonJames Thomas Whittington (1 patent)Christopher John RobertsonChristopher John Robertson (4 patents)Lewis George GradonLewis George Gradon (58 patents)Nicholas Charles Alan SmithNicholas Charles Alan Smith (26 patents)James Thomas WhittingtonJames Thomas Whittington (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Fisher & Paykel Limited (2 from 137 patents)

2. Fisher & Paykel Healthcare Limited (1 from 1,234 patents)

3. Innovative Health Technologies (Nz) Limited (1 from 1 patent)


4 patents:

1. 7073506 - Tongue stabilizing device

2. 6997186 - Breathing assistance apparatus

3. 6820617 - Breathing assistance apparatus

4. 6679257 - Breathing assistance apparatus

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idiyas.com
as of
1/16/2026
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