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Official data from INPI

CONJUNTO DE VALVULA REGULADORA E MODULADORA DE FLUXO

Em AnáliseInvention Patent

Application data

Number

PI7601299

Type

Invention Patent

Filing

03/03/1975

Publication

-

Progress at the INPI

  1. Filing03/03/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant05/25/82
  6. Expired09/21/93

The letters patent expired on 09/21/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 04/05/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

YARWAY CORP

Inventors

B. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

04/05/1988

RPI 911

Pedido de licença compulsória

#20.1

08/16/1983

RPI 669

Concessão da patente

#16.1

05/25/1982

RPI 605

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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