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Official data from INPI

VÁLVULA RETENTORA.

Em AnáliseUtility Model

Application data

Number

MU6100099

Type

Utility Model

Filing

01/26/1981

Publication

08/31/1982

Progress at the INPI

  1. Filing01/26/81
  2. Publication08/31/82
  3. Examination06/21/83
  4. Allowance08/28/84
  5. Grant05/28/85
  6. Expired12/07/93

The letters patent expired on 12/07/1993: 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: 05/27/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. G. (pessoa física)

Inventors

G. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

05/27/1986

RPI 814

Concessão da patente

#16.1

05/28/1985

RPI 762

Notificação para pagamento de retribuição

#13.1

12/26/1984

RPI 740

Deferimento

#9.1

08/28/1984

RPI 723

Solicitação de exame técnico

#4.1

06/21/1983

RPI 661

Publicação do pedido de patente

#3.1

08/31/1982

RPI 619

Carta-patente expirada

#21.1

12/07/1993

RPI 1201

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