Hemant K. Rohera — biography and timeline

By Hemant K. Rohera — ORCID 0009-0005-3275-1743
Published 20 September 2026 · Last updated 20 September 2026

This is a biography assembled only from things a stranger can check: patent offices, a company register, a regulator, a medical index and a DOI registry. Every date below has a document behind it. What is not on the record is not on this page, and the last section says what that leaves out.

The short version

Independent inventor, based in Pune, Maharashtra, India. Three granted United States patents in three unrelated fields — vehicle power generation, hybrid energy storage and a bioelectronic medical device — all held personally rather than by any company. Three registered Indian companies that develop and commercialise those technologies. One review indexed in PubMed via PMC, and six technical notes deposited with registered DOIs.

The three name forms on the public record are Hemant K. Rohera, Hemant Karamchand Rohera and Hemant Rohera. They are one person, and the patent record itself is the reason there are three: why the record spells the name three ways.

The timeline, with the document behind each line

Dates are taken from the issuing authority in each case, not from a profile or a press item. Where a filing date and a grant date are both given, they are the United States application date and the United States issue date as they appear on the patent itself.

What the order of those dates actually says

The energy work came first. The Hybrid power pack application was filed in August 2015 and the vehicle power-generation application thirteen months later, in September 2016. The medical device application came nearly four years after that, in June 2020. The companies follow the same order: the two energy companies in 2018, the healthcare company in 2020.

That order matters because the obvious objection to a portfolio spanning three unrelated fields is that it looks unfocused. The honest answer is that it is one method applied three times rather than three separate interests, and the common thread is electrical: what a current does when it is delivered in a controlled way rather than an uncontrolled one. In a battery pack that means putting a capacitor where the transient goes. In a vehicle it means conditioning power at source. In a medical device it means a microampere-level waveform with recited parameter ranges. The argument is set out at length in the hybrid storage note and in the transmembrane-potential note, and either can be judged on its merits.

Three United States grants in three fields over ten years is a modest record by the standards of a corporate research department and an unusual one for an individual. Both of those things are true at once, and neither needs inflating.

The patents, held personally

The assignee field on all three granted United States patents reads Individual. The patents are not owned by any of the companies, and none of them sits on a corporate balance sheet. The consequences for chain of title and for licensing are set out in what "Individual" on the assignee line means and in the note on the three companies.

The portfolio runs to 2035, 2037 and 2041 on the United States grants — see remaining term across the portfolio. The full jurisdiction-by-jurisdiction position, with the lapsed and ceased entries named rather than quietly omitted, is on the patent register.

Which Hemant Rohera this is

The name is not rare, and several unrelated people share it or something close to it. The identifiers below resolve the question in one step, which is why they are on every page of this site rather than only on this one.

• ORCID — 0009-0005-3275-1743, the persistent identifier for the author record.
• Wikidata — Q141430390.
• Justia — two inventor pages, Hemant Karamchand Rohera and Hemant Rohera, because the USPTO record carries two spellings of one name.
• Google Scholar — the author profile.

One collision is worth naming explicitly because it is a brand rather than a person. Emedica Ltd of the United Kingdom is a general-practice examination training company with no connection to the eMedica device or to any company here. They are unrelated organisations that share a name.

What this page does not claim

A biography is the easiest page on any site to inflate, so the limits are stated rather than left to inference.

• No years-of-experience figure is given. Numbers of that kind circulate in third-party write-ups about me; none of them has a document behind it, and I am not going to repeat one because it flatters.
• No patent count is given as a number. Jurisdictions are named on the register instead, because a count goes stale the moment one entry lapses and every count of this portfolio found in circulation has been wrong.
• No award, ranking, honour or listing is claimed. Where one has appeared in a supplied-content press item, it is not evidence and it is not repeated here.
• No clinical claim is made anywhere on this site for the medical device. What the regulatory record does and does not establish is set out in the eMedica questions page, where nine of the eighteen answers are no.
• No institutional affiliation, degree or employer is listed, because none is being asserted as part of the record. The work stands on the patents and the publications.

Where to check every line of this

• USPTO and Google Patents — filing date, issue date, assignee and inventor name on each of the three grants.
• Ministry of Corporate Affairs — the three CINs above give incorporation date, registered office, directors and filings.
• PubMed — PMID 41116920. The complete publication position, labelled exactly, is on the research and publications index.
• Zenodo — the six technical notes, each with a registered DOI, listed on the same page.