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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8101788

Type

Invention Patent

Filing

03/24/1981

Publication

11/03/1982

Progress at the INPI

  1. Filing03/24/81
  2. Publication11/03/82
  3. Examination01/22/85
  4. Allowance08/20/85
  5. Grant04/29/86
  6. Expired09/24/96

The letters patent expired on 09/24/1996: 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: 04/29/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Westinghouse do Brasil S/A

RJ, BR

See this company's full portfolio

Inventors

O. I. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/29/1986

RPI 810

Notificação para pagamento de retribuição

#13.1

12/24/1985

RPI 792

Deferimento

#9.1

08/20/1985

RPI 774

Solicitação de exame técnico

#4.1

01/22/1985

RPI 744

Publicação do pedido de patente

#3.1

11/03/1982

RPI 628

Carta-patente expirada

#21.1

09/24/1996

RPI 1347

Pedido de licença compulsória

#20.1

10/27/1992

RPI 1143

Pedido de licença compulsória

#20.1

07/24/1990

RPI 1025

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