Acetohexamide cyclohexyl isocyanate patent?

Do you mean a patent that involves acetohexamide and cyclohexyl isocyanate (for example, a synthesis route or a derivative made with cyclohexyl isocyanate), or a patent specifically about acetohexamide itself? Also, which region are you interested in (US, Europe, worldwide) and what timeframe?

If you’re planning to search patents yourself, here are practical steps and keywords:

- Databases to use:
- Google Patents (easy and broad)
- USPTO PatFT (US)
- Espacenet (European and international)
- WIPO Patentscope (PCT)

- Suggested search terms
- acetohexamide
- "acetohexamide" AND "cyclohexyl isocyanate"
- acetohexamide AND isocyanate
- "cyclohexylcarbamoyl" AND acetohexamide
- sulfonylurea AND cyclohexyl
- "urea" AND acetohexamide AND cyclohexyl
- if you want broader scope: acetohexamide OR tolbutamide OR other early sulfonylureas to catch related syntheses

- Helpful tips
- Try multiple spellings and synonyms (e.g., "cyclohexyl isocyanate" vs. "cyclohexylcarbamate" in some patents).
- Look in the assignee fields for pharmaceutical companies active in sulfonylurea chemistry (older patents often list big pharma as the applicant).
- Filter by publication date if you want historical context (many relevant patents are from the 1950s–1980s).
- If you find a patent but can’t access the full text, check the front page for the invention’s title and the patent number, then search that number in the database for a full view or PDFs.

If you can share more specifically what you need (e.g., a list of patent numbers, a landscape summary, or a patent text you have), I can help interpret or summarize. I can also help draft a targeted search query and walk you through evaluating the results.