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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8004925

Type

Invention Patent

Filing

08/06/1980

Publication

04/06/1982

Progress at the INPI

  1. Filing08/06/80
  2. Publication04/06/82
  3. Examination08/30/83
  4. Allowance11/13/84
  5. Grant05/28/85
  6. Expired09/19/95

The letters patent expired on 09/19/1995: 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: 05/28/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company.

US

See this company's full portfolio

Inventors

W. [. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/28/1985

RPI 762

Notificação para pagamento de retribuição

#13.1

03/26/1985

RPI 753

Republicação - classificação IPC

#15.11

12/11/1984

RPI 738

Deferimento

#9.1

11/13/1984

RPI 734

Exigência - art. 36 da LPI

#6.1

02/14/1984

RPI 695

Solicitação de exame técnico

#4.1

08/30/1983

RPI 671

Publicação do pedido de patente

#3.1

04/06/1982

RPI 598

Carta-patente expirada

#21.1

09/19/1995

RPI 1294

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