Official data from INPI

PROCESSO PARA A CONVERSAO DE UM ANIDRIDO DE ACIDO

ConcedidaInvention Patent

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Application data

Number

PI8104727

Type

Invention Patent

Filing

07/22/1980

Publication

04/13/1982

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Progress at the INPI

Filing07/22/80
Publication04/13/82
Examination07/06/82
Allowance06/11/85
Grant12/31/85
Terminated08/07/90

The patent was granted on 12/31/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 12/31/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HALCON SD GROUP INC

Inventors

R. N. (pessoa física)

Technical data

IPC Classification

C07C 67/00 C07C 67/10 C07C 69/00 C07C 69/02 C07C 69/03 C07C 69/16 C07C 69/78

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

09/24/1985

RPI 779

Deferimento

#9.1

06/11/1985

RPI 764

8.1

02/26/1985

RPI 749

Exigência - art. 36 da LPI

#6.1

04/24/1984

RPI 705

Solicitação de exame técnico

#4.1

07/06/1982

RPI 611

Publicação do pedido de patente

#3.1

04/13/1982

RPI 599

Anuidade - prazo legal encerrado

#18.2

08/07/1990

RPI 1027

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