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IPC Subgroup
A61F 6/1

Diaphragms

Introduced: January 1990

Last revised: January 2006

Full Title

Contraceptive devices; Pessaries; Applicators therefor > for use by females > Pessaries, i.e. devices worn in the vagina to support the uterus, remedy a malposition or prevent conception > Diaphragms

Classification Context

Section:
HUMAN NECESSITIES
Class:
MEDICAL OR VETERINARY SCIENCE; HYGIENE
Subclass:
FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS

Top Applicants

Top 10 applicants by patent filingsfor class A61, 2013–2023, worldwide · Source: EPO PATSTAT

  1. PHILIPS ELECTRONICS NL 18,523
  2. NOVARTIS CH 14,253
  3. COVIDIEN US 13,953
  4. ROCHE CH 12,005
  5. CHINESE ACADEMY OF SCIENCES 11,955
  6. UNIVERSITY OF CALIFORNIA US 11,692
  7. HARVARD UNIVERSITY US 11,596
  8. L'OREAL FR 11,593
  9. P&G (PROCTER & GAMBLE COMPANY) US 11,297
  10. OLYMPUS CORPORATION JP 9,594