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Official data from INPI

GRANULADOR DE ENXOFRE.

ConcedidaInvention Patent

Application data

Number

PI8001894

Type

Invention Patent

Filing

03/28/1980

Publication

-

Progress at the INPI

  1. Filing03/28/80
  2. Publication
  3. Examination12/15/81
  4. Allowance09/04/84
  5. Grant03/26/85
  6. Expired05/16/95

The letters patent expired on 05/16/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 03/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Petróleo Brasileiro S/A - Petrobrás

RJ, BR

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Inventors

D. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/26/1985

RPI 753

Notificação para pagamento de retribuição

#13.1

12/26/1984

RPI 740

Republicação - classificação IPC

#15.11

12/04/1984

RPI 737

Deferimento

#9.1

09/04/1984

RPI 724

Exigência - art. 36 da LPI

#6.1

02/07/1984

RPI 694

Solicitação de exame técnico

#4.1

12/15/1981

RPI 582

Carta-patente expirada

#21.1

05/16/1995

RPI 1276

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