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Official data from INPI

VÁLVULA DE CARRETEL.

ConcedidaInvention Patent

Application data

Number

PI8303574

Type

Invention Patent

Filing

07/04/1983

Publication

04/24/1984

Progress at the INPI

  1. Filing07/04/83
  2. Publication04/24/84
  3. Examination07/31/84
  4. Allowance05/28/85
  5. Grant11/26/85
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 11/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Automatic Switch Company

US

See this company's full portfolio

Inventors

C. A. (pessoa física)

V. J. (pessoa física)

Technical data

IPC Classification

Priority claims

US

401.773 · 07/26/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/26/1985

RPI 788

Notificação para pagamento de retribuição

#13.1

09/17/1985

RPI 778

Republicação - classificação IPC

#15.11

06/18/1985

RPI 765

Deferimento

#9.1

05/28/1985

RPI 762

Solicitação de exame técnico

#4.1

07/31/1984

RPI 719

Publicação do pedido de patente

#3.1

04/24/1984

RPI 705

Pedido de patente depositado

#2.1

08/16/1983

RPI 669

Carta-patente expirada

#21.1

Patente extinta em 04/07/98

07/01/2008

RPI 1956

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