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Official data from INPI

PROCESSO PARA REMOVER A CRISTALIZACAO ESFERICA DE PIROCLAM

ConcedidaInvention Patent

Application data

Number

PI7806675

Type

Invention Patent

Filing

10/09/1978

Publication

-

Progress at the INPI

  1. Filing10/09/78
  2. Publication
  3. Examination03/16/82
  4. Allowance01/10/84
  5. Grant07/31/84
  6. Expired05/03/94

The letters patent expired on 05/03/1994: 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: 07/31/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DOW CHEMICAL CO

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Inventors

M. B. (pessoa física)

N. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/31/1984

RPI 719

Notificação para pagamento de retribuição

#13.1

05/02/1984

RPI 706

Deferimento

#9.1

01/10/1984

RPI 690

Exigência - art. 36 da LPI

#6.1

12/07/1982

RPI 633

Solicitação de exame técnico

#4.1

03/16/1982

RPI 595

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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