{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11977056","patent":{"patent_number":"US-11977056","title":"Liquid delivery pump and liquid chromatograph","assignee":null,"inventors":[],"filing_date":"2019-07-09T00:00:00.000Z","publication_date":"2024-05-07T00:00:00.000Z","cpc_codes":["G01N","G01N","G01N","G01N","G01N"],"num_claims":7,"abstract":"A liquid delivery pump includes a primary plunger pump, a secondary plunger pump fluidly connected in series downstream of the primary plunger pump, and a pressure sensor that detects a system pressure. The liquid delivery pump further includes a liquid delivery control part configured to execute first constant pressure control in a first constant pressure control term and to execute second constant pressure control in a second constant pressure control term. The first constant pressure control term is a term, which is in a liquid delivery cycle consisting of the primary discharge process and the secondary discharge process, in which the primary discharge process is executed, the second constant pressure control term is a part of a term in which the secondary discharge process is executed, and the second constant pressure control term is including a term that is continuous after the first constant pressure control term."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Liquid delivery pump and liquid chromatograph","description":"A liquid delivery pump includes a primary plunger pump, a secondary plunger pump fluidly connected in series downstream of the primary plunger pump, and a pressure sensor that detects a system pressur","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11977056","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-11977056","citation_suggestion":"Patentable. \"Liquid delivery pump and liquid chromatograph\" (US-11977056). https://patentable.app/patents/US-11977056","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11977056","json":"https://patentable.app/api/llm-context/US-11977056","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T17:21:28.956Z"}