ALEXANDRIA, Va., June 19 -- United States Patent no. 12,332,978, issued on June 17, was assigned to Zoho Corporation Private Limited (Kanchipuram District, India).
"Methods and systems for watermarking documents" was invented by Sujatha S Iyer (Guduvanchery, India), Balachandar S (Guduvanchery, India), Ramprakash Ramamoorthy (Singaperumal Koil, India) and Shailesh Kumar Davey (Potheri, India).
According to the abstract* released by the U.S. Patent & Trademark Office: "Described are methods and system that digitally watermark documents using an encoding scheme that embeds unique identifiers into the files by perturbing the relative heights of words to create patterns that are imperceptible to the human eye but decodable to recover the iden...