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Official data from INPI

VALVULA DE DESCARGA POR PRESSAO COM EMBOLO MOVIVEL

Em AnáliseInvention Patent
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Application data

Number

PI7607173

Type

Invention Patent

Filing

01/31/1976

Publication

-
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Progress at the INPI

  1. Filing01/31/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant02/22/83
  6. Expired07/27/93

The letters patent expired on 07/27/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 08/07/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

R. S. (pessoa física)

Inventors

S. R. (pessoa física)

Technical data

IPC Classification

F16K 31/12

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

08/07/1984

RPI 720

20.7

03/07/1984

RPI 698

201

12/20/1983

RPI 687

Pedido de licença voluntária

#17.1

07/12/1983

RPI 664

Concessão da patente

#16.1

02/22/1983

RPI 644

Notificação para pagamento de retribuição

#13.1

01/18/1983

RPI 639

Notificação para pagamento de retribuição

#13.1

11/30/1982

RPI 632

110

09/21/1982

RPI 622

Recurso

#12.1

12/22/1981

RPI 583

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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