Hey Gregg,
I have researched a little bit. With a little trick I got the standard particle to create obj sequences. (Which will work similarly with TP. You hadn’t specified it so far)
I used “Riptide” for it. It is a plug in that write obj sequences. I placed a 1x1cm polygon under the “Emitter” and set it to Show Object. The “Emitter” itself under a “Connect” object.
To my knowledge (http://en.wikipedia.org/wiki/Wavefront_.obj_file) obj can’t contain particles, hence the workaround.
If the scene is on frame zero, with no particles—not polygon, Riptide wont work, it checks the scene if there is a polygon. So press play and stop to make the app happy. Then export—see attachment.
Funnily enough it wont read this sequence back in. But that was not your question, right. Testing a single file, it merges, and in that way I was able to see that the obj has the polygons stored. Which made me curios: Deleting the empty obj (frame zero) and it worked with Riptide. Which means, I loaded the sequence in, and of course played with it. The result in the second file (CV2_r14_drs_13_objs_01.zip), and the source file from which I had exported the sequence is as well included (CV2_r14_drs_13_objs_00.zip).
To be president, I think Alembic should be tried as well, as that is for model export, what ACES is for color, perhaps soon the industry standards. Which I have both initially suggested to integrate in C4D.
I hope that helps.
All the best
Sassi