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Official data from INPI

APERFEIÇOAMENTO EM PÁRA-RAIOS

ConcedidaInvention Patent

Application data

Number

PI8107003

Type

Invention Patent

Filing

10/29/1981

Publication

05/31/1983

Progress at the INPI

  1. Filing10/29/81
  2. Publication05/31/83
  3. Examination02/05/85
  4. Allowance04/26/88
  5. Grant02/28/89
  6. Terminated09/20/94

The patent was granted on 02/28/1989 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 02/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Usinas Siderúrgicas de Minas Gerais S/A - USIMINAS

MG, BR

See this company's full portfolio

Inventors

A. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/28/1989

RPI 958

Notificação para pagamento de retribuição

#13.1

08/09/1988

RPI 929

Deferimento

#9.1

04/26/1988

RPI 914

Retificação

#15.6

02/17/1988

RPI 904

Retificação

#15.3

11/03/1987

RPI 889

11.8

08/25/1987

RPI 879

Retificação

#15.3

06/09/1987

RPI 868

Exigência - art. 36 da LPI

#6.1

04/01/1986

RPI 806

Republicação - classificação IPC

#15.11

10/01/1985

RPI 780

Conhecimento de parecer técnico

#7.1

09/17/1985

RPI 778

Solicitação de exame técnico

#4.1

02/05/1985

RPI 746

Publicação do pedido de patente

#3.1

05/31/1983

RPI 658

Pedido de patente depositado

#2.1

12/15/1981

RPI 582

Anuidade - prazo legal encerrado

#18.2

09/20/1994

RPI 1242

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