For the Inventor, By the Inventor

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North Plympton, Australia

Philmac Pty Ltd

USPTO Granted Patents = 15

% Expired Patents = 13.3

CIPO Patents = 4

EPO Patents = 2

Trademarks = 4

Forward Citations = 135

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11 inventors (with patents filed for the assignee):

Malcolm J Pridham (6 out of 6 patents)

David Chelchowski (4 out of 11 patents)

Geoffrey B Puckett (4 out of 8 patents)

4. Wayne A Harris (3 out of 3 patents)

5. Malcolm W Phillipps (2 out of 2 patents)

6. Geoff Puckett (2 out of 2 patents)

7. Peter Newall (1 out of 1 patent)

8. Peter R Laffrey (1 out of 1 patent)

9. Guy M Phillipps (1 out of 1 patent)

10. Raghunath Prabhu (1 out of 1 patent)

11. Stuart Watson (1 out of 1 patent)

12. Geoffrey Bryan Puckett (0 patent)

13. Luke Raymond (0 patent)

14. Luke Raymond (0 patent)

15. Geoffrey Bryan Puckett (0 patent)

15 patents: Sort by Forward Citations

1. 12181080 - Push-fit pipe fitting with a visual indicator (2024-12-31),

2. 11181214 - Pipe coupling (2021-11-23),

3. D708706 - Rotational valve assembly (2014-07-08),

4. 8764069 - Stepped down grip ring for use in pipe couplings and pipe coupling incorporating same (2014-07-01),

5. D695879 - Geared halfball component for a rotational valve (2013-12-17),

6. 7846365 - Method of manufacture of a nut and tail assembly (2010-12-07),

7. D558037 - O-ring (2007-12-25),

8. 7255373 - Coupling or transition fitting for the connection of metal or plastic pipes (2007-08-14),

9. 7178838 - Nut and tail assembly (2007-02-20),

10. 5593186 - Coupling for outer surface engagement of polymeric pipe (1997-01-14),

11. 5360131 - Cover height adjuster (1994-11-01),

12. 5303583 - Meter boundary box (1994-04-19),

13. 5232157 - Insect resistant spray emitter (1993-08-03),

14. 4822082 - Tube connector (1989-04-18),

15. 4708161 - Plug valve (1987-11-24),

Philmac Pty Ltd is a prominent Australian company specializing in the design and manufacture of high-quality plastic pipe fittings and valves. With a strong focus on water management solutions, Philmac serves various sectors, including agriculture, plumbing, and irrigation. The company is recognized for its innovative approach to product development, ensuring reliability and efficiency in fluid transfer systems. Operating from North Plympton, Philmac is committed to sustainability and enhancing water conservation practices across Australia and beyond.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

15 Patents

#1 in

#245 in

#39,881 in the World

North Plympton, Australia

Philmac Pty Ltd

Forward Citations = 135

11 inventors:

Malcolm J Pridham (6 out of 6 patents)

David Chelchowski (4 out of 11 patents)

Geoffrey B Puckett (4 out of 8 patents)

4. Wayne A Harris (3 out of 3 patents)

5. Malcolm W Phillipps (2 out of 2 patents)

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