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Official data from INPI

PROCESSO DE PRODUCAO DE POLIOLEFINAS EM PO

ConcedidaInvention Patent

Application data

Number

PI7800082

Type

Invention Patent

Filing

12/10/1977

Publication

-

Progress at the INPI

  1. Filing12/10/77
  2. Publication
  3. Examination
  4. Allowance01/10/84
  5. Grant07/31/84
  6. Expired07/20/93

The letters patent expired on 07/20/1993: 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: 07/31/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

VEBA CHEMIE AG

Inventors

B. H. (pessoa física)

D. K. (pessoa física)

S. A. (pessoa física)

T. B. (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

03/29/1983

RPI 649

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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