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Official data from INPI

RECOBRIMENTO SUPERFICIAL PARA UM TRASPORTATADOR CENTRIFUGO

ConcedidaInvention Patent

Application data

Number

PI8107983

Type

Invention Patent

Filing

03/31/1980

Publication

03/09/1982

Progress at the INPI

  1. Filing03/31/80
  2. Publication03/09/82
  3. Examination11/22/83
  4. Allowance08/13/85
  5. Grant03/25/86
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 03/25/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PENNWALT CORP

See this company's full portfolio

Inventors

S. L. (pessoa física)

Technical data

IPC Classification

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

12/17/1985

RPI 791

Deferimento

#9.1

08/13/1985

RPI 773

Exigência - art. 36 da LPI

#6.1

02/26/1985

RPI 749

Exigência - art. 36 da LPI

#6.1

08/28/1984

RPI 723

Solicitação de exame técnico

#4.1

11/22/1983

RPI 683

Notificação de entrada na fase nacional - PCT

#1.3

03/09/1982

RPI 594

Carta-patente expirada

#21.1

Patente extinta em 16/03/96

08/19/2008

RPI 1963

Pedido de licença compulsória

#20.1

03/01/1990

RPI 1007

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