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Official data from INPI

VALVULA DE PENDULO

Em AnáliseInvention Patent

Application data

Number

PI7705028

Type

Invention Patent

Filing

08/03/1976

Publication

-

Progress at the INPI

  1. Filing08/03/76
  2. Publication
  3. Examination
  4. Allowance06/01/82
  5. Grant
  6. Expired07/06/93

The letters patent expired on 07/06/1993: 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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

LEYBOLD HERAEUS GMBH & CO KG

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

18.8

11/28/1989

RPI 997

Anuidade - prazo legal encerrado

#18.2

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

09/21/1982

RPI 622

15.0

06/01/1982

RPI 606

Deferimento

#9.1

06/01/1982

RPI 606

Exigência - art. 36 da LPI

#6.1

10/20/1981

RPI 574

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

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