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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8101050

Type

Invention Patent

Filing

02/20/1981

Publication

-

Progress at the INPI

  1. Filing02/20/81
  2. Publication
  3. Examination10/18/83
  4. Allowance12/17/85
  5. Grant08/26/86
  6. Expired03/26/96

The letters patent expired on 03/26/1996: 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: 08/26/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Stauffer Chemical Company.

US

See this company's full portfolio

Inventors

R. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/26/1986

RPI 827

Notificação para pagamento de retribuição

#13.1

04/22/1986

RPI 809

Deferimento

#9.1

12/17/1985

RPI 791

Republicação - classificação IPC

#15.11

08/27/1985

RPI 775

Exigência - art. 36 da LPI

#6.1

08/21/1984

RPI 722

Solicitação de exame técnico

#4.1

10/18/1983

RPI 678

Carta-patente expirada

#21.1

03/26/1996

RPI 1321

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