Growing community of inventors

Newton Aycliffe, United Kingdom

Derek A Parkin

Average Co-Inventor Count = 5.00

ph-index = 2

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 = 24

Derek A Parkin ↔ Thomas I Insley (3 patents)Derek A Parkin ↔ Desmond T Curran (3 patents)Derek A Parkin ↔ Garry J Walker (3 patents)Derek A Parkin ↔ Andrew Murphy (3 patents)Derek A Parkin ↔ Mark A J Fernandes (3 patents)Derek A Parkin ↔ Chris W Scott (2 patents)Derek A Parkin ↔ Abigail L Curtis (2 patents)Derek A Parkin ↔ Lawrie D Coote (2 patents)Derek A ParkinDerek A Parkin (5 patents)Thomas I InsleyThomas I Insley (62 patents)Desmond T CurranDesmond T Curran (61 patents)Garry J WalkerGarry J Walker (21 patents)Andrew MurphyAndrew Murphy (20 patents)Mark A J FernandesMark A J Fernandes (14 patents)Chris W ScottChris W Scott (2 patents)Abigail L CurtisAbigail L Curtis (2 patents)Lawrie D CooteLawrie D Coote (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. 3m Innovative Properties Company (5 from 14,076 patents)


5 patents:

1. 12329994 - Respirator flow control apparatus and method

2. 11130008 - Respirator flow control apparatus and method

3. 10137320 - Respirator flow control apparatus and method

4. D575390 - Exhalation valve filter

5. D550837 - Frame that supports an exhalation valve filter

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as of
12/26/2025
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