Aspose.Words v6.0.0.0
BuiltInDocumentProperties “Title” and “Author” not present if saving as PDF; “NameOfApplication” - not present if saving as PDF and not present if saving as DOC. Screenshots of documents properties included.
C# code:
Document d1 = new Document();
d1.BuiltInDocumentProperties.Title = "Title";
d1.BuiltInDocumentProperties.Author = "Author";
d1.BuiltInDocumentProperties.NameOfApplication = "Application";
d1.Save("d1.doc");
d1.Save("d1.pdf");