Growing community of inventors

Hong Kong, China

Douglas Rumsam

Average Co-Inventor Count = 3.60

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 = 12

Douglas RumsamTimothée Lesné (5 patents)Douglas RumsamLewis Cheng (4 patents)Douglas RumsamAndy Wong (4 patents)Douglas RumsamVictor Hugo Ocegueda Gallaga (1 patent)Douglas RumsamYifeng Zhang (1 patent)Douglas RumsamJaime Ramos (1 patent)Douglas RumsamLewis Ka Hang Cheng (1 patent)Douglas RumsamTimothée Lesné (1 patent)Douglas RumsamYifeng Zhang (0 patent)Douglas RumsamDouglas Rumsam (6 patents)Timothée LesnéTimothée Lesné (5 patents)Lewis ChengLewis Cheng (5 patents)Andy WongAndy Wong (4 patents)Victor Hugo Ocegueda GallagaVictor Hugo Ocegueda Gallaga (37 patents)Yifeng ZhangYifeng Zhang (21 patents)Jaime RamosJaime Ramos (8 patents)Lewis Ka Hang ChengLewis Ka Hang Cheng (4 patents)Timothée LesnéTimothée Lesné (1 patent)Yifeng ZhangYifeng Zhang (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Citadel Casing Ltd (6 from 6 patents)

2. Ramos, Jaime (0 patent)

3. Lesne, Timothée (0 patent)

4. Cheng, Lewis Ka Hang (0 patent)

5. Zhang, Yifeng (0 patent)

6. Ocegueda Gallaga, Victor Hugo (0 patent)

7. Rumsam, Douglas (0 patent)


6 patents:

1. D1075517 - Bottle case

2. D1043370 - Packaging

3. 11866236 - Folding tamper-proof case with reinforcing inserts

4. 11492173 - Folding case and methods thereof

5. 10994889 - Folding tamper-proof case and methods thereof

6. 10479597 - Tamper-proof case systems and methods

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as of
1/13/2026
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