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Official data from INPI

COMPOSICAO CATALITICA SINERGICA,E PROCESSO PARA PREPARAR UM BETA-HIDROXI-ESTER

ConcedidaInvention Patent

Application data

Number

PI7800250

Type

Invention Patent

Filing

01/16/1978

Publication

-

Progress at the INPI

  1. Filing01/16/78
  2. Publication
  3. Examination
  4. Allowance05/12/87
  5. Grant11/24/87
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 11/24/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DOW CHEMICAL CO

See this company's full portfolio

Inventors

G. A. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/24/1987

RPI 892

Notificação para pagamento de retribuição

#13.1

09/22/1987

RPI 883

Deferimento

#9.1

05/12/1987

RPI 864

Exigência - art. 36 da LPI

#6.1

01/31/1984

RPI 693

Republicação - classificação IPC

#15.11

04/26/1983

RPI 653

Conhecimento de parecer técnico

#7.1

01/25/1983

RPI 640

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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