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Walter D. Celmer — 21 Patents

Pfizer: 21 patents #140 of 5,153Top 3%
New London, CT: #3 of 100 inventorsTop 3%
Connecticut: #1,867 of 34,797 inventorsTop 6%
Overall (All Time): #201,324 of 4,157,543Top 5%
21 Patents All Time
Walter D. Celmer has been granted 21 US patents while listed as an inventor at Pfizer. The first was granted in 1980 and the most recent in November 1987. Walter D. Celmer ranks #201,324 of 4,157,543 US inventors in our database (top 4.8%). Patent records list Walter D. Celmer in New London, CT, US.

Issued Patents All Time

Showing 1–21 of 21 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4707493 19-epi-dianemycin as an anticoccidial and antibacterial agent Walter P. Cullen, Hiroshi Maeda, John C. Ruddock, Junsuke Tone 1987-11-17 $22,135,000
4652523 Method of preparing a new polyether antibiotic from streptomyces Walter P. Cullen, Hiroshi Maeda, Junsuke Tone 1987-03-24 $28,763,000
4625041 Acidic polycyclic ether antibiotic Walter P. Cullen, Hiroshi Maeda, Junsuke Tone 1986-11-25 $16,616,000
4605624 Nocardia species capable of producing nargenicin C.sub.1 Walter P. Cullen, Riichiro Shibakawa, Junsuke Tone 1986-08-12 $57,723,000
4582796 Erythromycin D and esters thereof by fermentation with Nocardia sp. ATCC 39043 Walter P. Cullen, Paul Watts, Riichiro Shibakawa, Junsuke Tone 1986-04-15 $11,134,000
4552843 Process for producing an acidic polycyclic ether antibiotic by cultivation of a novel strain of Streptomyces endus subspecies aureus Walter P. Cullen, Hiroshi Maeda, Junsuke Tone 1985-11-12 $19,831,000
4547523 Polyether antibiotic from streptomyces Walter P. Cullen, Hiroshi Maeda, Junsuke Tone 1985-10-15 $9,172,000
4543334 Streptomyces capable of producing neutral macrolide antibacterial agents Walter P. Cullen, Hiroshi Maeda, Junsuke Tone 1985-09-24 $39,438,000
4533553 Polycyclic ether antibiotic Walter P. Cullen, Riichiro Shibakawa, Junsuke Tone 1985-08-06 $13,391,000
4496546 Erythromycin D and esters thereof Walter P. Cullen, Paul Watts, Riichiro Shibakawa, Junsuke Tone 1985-01-29 $17,334,000
4450237 Streptomyces albus subspecies indicus Walter P. Cullen, Riichiro Shibakawa, Junsuke Tone 1984-05-22 $11,624,000
4436747 Nargenicin C.sub.1 Walter P. Cullen, Riichiro Shibakawa, Junsuke Tone 1984-03-13 $38,419,000
4431801 Polycyclic ether antibiotic Walter P. Cullen, Riichiro Shibakawa, Junsuke Tone 1984-02-14 $7,152,000
4411892 Tylosin macrolide antibiotics from streptomyces Walter P. Cullen, Riichiro Shibakawa, Junsuke Tone 1983-10-25 $12,940,000
4361649 Polycyclic ether antibiotic Walter P. Cullen, Riichiro Shibakawa, Junsuke Tone 1982-11-30 $15,979,000
4287182 Antibiotics produced by a new microbe, Catenuloplanes japonicus Walter P. Cullen, Liang H. Huang, John R. Oscarson, Riichiro Shibakawa, Junsuke Tone 1981-09-01 $4,642,000
4247462 Ansamycin antibiotic Walter P. Cullen, John R. Oscarson, Liang H. Huang, Riichiro Shibakawa, Junsuke Tone 1981-01-27 $6,984,000
4225674 Process for producing new ansamycin antibiotic Walter P. Cullen, John R. Oscarson, Liang H. Huang, Riichiro Shibakawa, Junsuke Tone 1980-09-30 $16,658,000
4224314 Antibiotics produced by species of Nocardia Paul Watts, Walter P. Cullen, Liang H. Huang, Riichiro Shibakawa, Junsuke Tone 1980-09-23 $8,926,000
4212944 Process for producing nocardicin A Liang H. Huang, Mark T. Jefferson, Hiroshi Maeda, Kozo Inoue, Riichiro Shibakawa 1980-07-15 $7,009,000
4195079 New polycyclic ether antibiotic Walter P. Cullen, John R. Oscarson, Liang H. Huang, Riichiro Shibakawa, Junsuke Tone 1980-03-25 $14,104,000