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Official data from INPI

FORNO PARA PURIFICAÇÃO DE METAIS E VÁCUO.

ConcedidaInvention Patent

Application data

Number

PI8005168

Type

Invention Patent

Filing

08/15/1980

Publication

04/13/1982

Progress at the INPI

  1. Filing08/15/80
  2. Publication04/13/82
  3. Examination07/06/82
  4. Allowance07/09/85
  5. Grant03/25/86
  6. Expired09/26/95

The letters patent expired on 09/26/1995: 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: 03/25/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Telecomunicações Brasileiras S/A - Telebrás

SP, BR

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Inventors

D. M. (pessoa física)

M. P. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/25/1986

RPI 805

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

102

07/02/1985

RPI 767

Pedido de recurso

#12.3

02/20/1985

RPI 748

11.3

10/23/1984

RPI 731

Exigência - art. 36 da LPI

#6.1

04/17/1984

RPI 704

Solicitação de exame técnico

#4.1

07/06/1982

RPI 611

Publicação do pedido de patente

#3.1

04/13/1982

RPI 599

Carta-patente expirada

#21.1

09/26/1995

RPI 1295

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