Just dropping a couple more useful things in here, since the topic came back up. Attached is a PDF of an Excel spreadsheet I created a couple years ago, which I use all the time as a quick reference. Most of the data was gathered into Excel using an iLogic rule, then I manually formatted it and added a few notes of my own. I also attached a text file containing the code from one of my external iLogic rules which gathers similar data from a document in Inventor and writes it to Excel, but with minimal formatting, and no custom notes included. This version does not gather the 'values' of the iProperties, just their structural data, and value types (if they have a value). There are a 2 or 3 properties which have an 'IPictureDisp' type value, when they have a value, but this just writes 'Picture' when the value is present, or 'Nothing' when it does not have a value. For best results, run it while a 'saved' or 'opened' document is active in Inventor, rather than a 'new' or unsaved one. You can customized or develop the code further if needed.
Wesley Crihfield

(Not an Autodesk Employee)