Last Updated: May 10, 2026

Details for Patent: 3,781,430


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Summary for Patent: 3,781,430
Title:Diuretic formulations
Abstract:A POTASSIUM CONSERVING DIURETIC, (3,5-DIAMINO-6-CHLOROPYRAZINOYL)GUANDINE HYDROCHLORIDE, IS CO-ADMINISTERED WITH A POTASSIUM EXCRETING DIURETIC (ETHACRYNIC ACID AND HYDROCHLOROTHIAZIDE) TO AVOID HYPOKALEMIA IN PATIENTS.
Inventor(s):E Cragoe
Assignee: Merck and Co Inc
Application Number:US00210577A
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

What Is the Claim Scope of US Patent 3,781,430?

Are the claims provided for US Patent 3,781,430?

No. The prompt ends at “The claims are:” and does not include the claim text. Without the actual claim language, a complete, accurate claim-scope and patent-landscape analysis cannot be produced.

Is a complete patent-landscape analysis possible without claim text?

No. A defensible landscape for this specific patent requires, at minimum, the asserted claim elements (independent claim boundaries and claim-dependent limitations) to map coverage to:

  • mechanism-of-action and therapeutic use boundaries
  • chemical or structural scope (if composition claims exist)
  • formulation scope (if dosage-form claims exist)
  • method steps and necessary process parameters (if method claims exist)
  • foreseeable design-around entry points

What is included if claims are missing?

Only non-verifiable placeholders or generic statements would be produced. That does not meet the requirement for hard-data, complete and accurate analysis.


Key Takeaways

  • The request cannot be completed because the claim text for US Patent 3,781,430 is not included.
  • Without the exact claims, a precise scope analysis and a targeted US patent landscape mapping cannot be generated.

FAQs

  1. Can a claim-scope analysis be done without the full claim text?
    No, claim scope depends on the exact wording of independent and dependent claims.

  2. Can a patent landscape be built without claim boundaries?
    Not to a standard that is actionable for R&D or investment decisions.

  3. What parts of claims drive landscape conclusions?
    Independent-claim limitations, dependent-claim added constraints, and any definitions in the specification tied to claim terms.

  4. Does title alone determine scope?
    No. Title and abstract do not substitute for claim elements and restrictions.

  5. What is required for a complete landscape for this specific US patent?
    The full claim text (at least independent claims) plus the patent’s bibliographic data to identify related filings and forward citations.

More… ↓

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Drugs Protected by US Patent 3,781,430

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 3,781,430

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria 277992 ⤷  Start Trial
Belgium 639386 ⤷  Start Trial
Belgium 643268 ⤷  Start Trial
Belgium 651729 ⤷  Start Trial
Belgium 651730 ⤷  Start Trial
Belgium 653477 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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