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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8100240

Type

Invention Patent

Filing

01/16/1981

Publication

-

Progress at the INPI

  1. Filing01/16/81
  2. Publication
  3. Examination09/13/83
  4. Allowance12/16/86
  5. Grant08/25/87
  6. Expired03/19/96

The letters patent expired on 03/19/1996: 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: 08/25/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Saipem S.p.A..

IT

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Inventors

R. F. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/25/1987

RPI 879

Notificação para pagamento de retribuição

#13.1

05/05/1987

RPI 863

Deferimento

#9.1

12/16/1986

RPI 843

Republicação - classificação IPC

#15.11

04/23/1985

RPI 757

Exigência - art. 36 da LPI

#6.1

02/26/1985

RPI 749

Solicitação de exame técnico

#4.1

09/13/1983

RPI 673

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: B23K 33/00; B23K 9/02; B23K 31/06.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

03/19/1996

RPI 1320

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